Before Yamcha decided what the best course of action was, he would need to determine exactly what the difference in strength here was. Depending on the fact which one of them was stronger, Yamcha would decide if he was best off trying to slip away from Cell via Instant Transmission, fending Cell off until the creature itself decided that continuing the fight wasn't worth it, or utterly destroying Cell himself and solving this problem that's been giving everyone headaches.
The major problem was that, given what little he knew about Cell, Yamcha felt sealed off from employing any of his moves that Cell might not have known. If Cell had faced anyone else, he may have picked up the Kamehameha already. However, if Yamcha showed him something like the Spirit Ball or Instant Movement, he'd essentially make Cell a much bigger problem for whoever would have to deal with Cell next. That was why Yamcha needed to scope which moves Cell already knew and try to fend him off using only those moves.
"What's wrong? Is my predator's gaze keeping you locked up, stiff with fear?" Cell smirked with mockery.
"What's with this obsession with predators? That's a new one amongst you Artificial Humans," Yamcha sneered with contempt. "What, did Puri stop trying to assimilate everyone into becoming Artificial Humans after being soundly beaten? Is she now at the Artificial Human superiority stage?"
"While I have no intention of explaining anything to my prey, that's about to nourish me with its energy, let's make one thing abundantly clear–I am not associated with that evil woman!" Cell gnashed his teeth with hatred, abandoning any semblance of teasing and mockery that he approached the fight with previously.
"Wait, what?" Yamcha gasped in surprise. That sudden drop of his guard together with Cell's escalating rage caused the Bio-Android to lash out with a sudden, dashing elbow strike to Yamcha's cheek. The blinding speed of the creature stunned Yamcha and the strength with which it struck made him blank out for a second there.
Cell advanced with weighty, hammering fist strikes from the sides, mirroring how a sluggish powerhouse like Artificial Human No. 8 would fight. Yamcha snapped out of his daze and moved his arms, crossed by his wrists and his hands shaped like butterfly wings, to intercept the incoming combination of attacks. Even if it wasn't particularly efficient to intercept one-armed swings with both arms, as it required the turning of his entire body to shift sides and transfer his kinetic energy to block the next swing, Yamcha fended off the first couple of strikes.
Finally, beginning to feel confident about being able to read Cell's moves and match his pace, Yamcha snapped his arms to the sides, deflecting both of Cell's arms to the sides and creating an opening for himself. With a step-in, vertical backhand strike, he rocked Cell's head and made his face pulse with red tension after a mean scrape.
Cell's tail reeled in from behind with a thrust that was aiming to impale Yamcha from the back and start draining him of energy. Yamcha couldn't feel it coming per se, but given how he knew Cell's intention to drain him of energy and he already saw Cell using the stinger on his tail, believing it to be the key to draining energy, he was experienced enough to put it all together. Reading Cell's move, Yamcha rolled forward and through Cell's side, putting Cell's own body in between him and the stinging tail while shooting his arms out and stopping himself in an upside-down position.
Using his legs, Yamcha began rapidly kicking at Cell's exposed back, as if he were running upside-down. With a stiffer kick, extending his body in a graceful, C-shaped arc, Yamcha drove his left leg into Cell's spine, bending the Bio-Android backward and sending him flying off to the side. With a rapid flurry of vanishes, Yamcha pursued his opponent with his hands ready in Wolf Fang Fist stance. However, just before he was going to execute it, Yamcha remembered he was trying to prevent Cell from learning any new moves.
Instead of hitting Cell with his best Wolf Fang Fist, Yamcha merely delivered a wide, arm-swiping beatdown with an improvised flurry of strikes. Ki began surging through Yamcha's body as the martial artist began powering up mid-beatdown. The swinging strikes left crescent-shaped arcs in the air, slicing like blades and leaving nasty grazes on Cell's body. Yamcha concluded his improvised combination by putting his arms together and drawing them back. A pulsating azure energy blast formed in between his hands, radiating with white jets of energy.
"Kamehameha!" Yamcha called out, releasing the blast point-blank and shooting Cell off through what looked to be a building built out of cookie dough and into a colorful green hill that seemed to be glazed with chocolate-like material. The resulting explosion obliterated the sweet-looking hillside, burying Cell in the rubble and teaching him the lesson that Yamcha didn't intend to just roll over and die.
Having learned his lesson with Cell already, Yamcha clutched his arms by his sides to be ready to defend himself and took off into the sky to avoid a subterranean attack. Most decisive beatdown combinations had one knock their opponent down to the ground. Given the destructive scale of the battle at hand, usually, such calamitous knockdowns involved opponents being buried underneath mountains of rubble, giving them a chance to slip away. Because Yamcha couldn't keep track of Cell's Ki and he had a bugging feeling that he didn't want to be tagged with that tail, this made dragging this fight out troublesome.
Instead of bursting from underground, Cell swooped out from a hollowed-out candy cane chimney and elevated himself into the sky right behind Yamcha. The stiff and prepared martial artist's gaze froze at the corner of his right side, realizing just how sneaky his opponent might be. Just as Cell began sneaking up on Yamcha to apply a stranglehold on him, Yamcha suddenly turned around and extended his hand, expelling a Kiai shockwave that drove Cell rolling away from him.
"You know, wolves are considered apex predators in some places too," Yamcha smirked with confidence. This last exchange showed him that Cell wasn't necessarily an opponent he was outmatched against in a fight. However, what would determine the outcome of this fight would be how their respective gimmicks and techniques would impact their irrelevant difference in power.
"Your Wolf Fang Fist is not a martial arts technique that I particularly desired to learn, that being said, I will if the opportunity presents itself," Cell found a way to both insult Yamcha and remind him of the handicap he agreed to work under. "How about I show you something interesting, just to see what sort of technique I can draw out of you while you struggle for your miserable life?"
Cell put its hands out in front of itself, pressing the lower sections together. Then he drew his arms back to his side with a rich smirk. "Ka… Me… Ha… Me…" he muttered out, expecting to see shock on Yamcha's face that Cell would employ the Kamehameha against him.
"Sorry to disappoint you, but I already assumed you knew that technique. That's why I used it against you earlier," Yamcha smiled with a confident point at himself with his thumb before assuming a defensive fighting pose. "That's a technique that a lot of martial artists on Earth know. If you've faced at least one of them, there's a chance they've used it against you. I bet they were extremely surprised to see it used back against them, but I'm not."
"Amusing… Haaa!" Cell blabbered out before thrusting his cupped-together hands out in front of him and releasing the destructive azure energy wave with a violent roar, aimed straight at Yamcha. The wave crashed against Yamcha, stopping by him as if hitting an impenetrable wall. After Yamcha's defensive block put too much tension on the integrity of the energy wave, it detonated with a blast that toppled the cookie and gingerbread houses of the Bannan villages down below.
Yamcha emerged from the heart of the explosive blast covered with shallow bruises and slight damage to his modified fighting spacesuit variant that he wore during the hunt for the Ultimate Dragon Balls. It was just as comfortable as his usual Turtle School gi, with all the hardiness of the Saiyan battle armor and the functionality of the latest model Capsule Corps spacesuit.
"Hmm… Have I cornered you this much that you resorted to blocking the attack?" Cell observed with moderate surprise in its voice.
"The last thing I want to do is teach you how to deal with a Kamehameha. After all, Goku's probably gonna send you packing with that technique, after all. That's, of course, if I don't take care of you here and now!" Yamcha clenched his fists by his side with a lively pump.
"You take care of me? Wolves don't get slaughtered by rabbits," Cell shook its head in dismissal. Looking just as confident about his odds to win, Yamcha reeled back in preparation to attack his opponent.
"Wait, why did his skin just go pale?" Yamcha wondered, delaying his all-out attack for a second as he noticed a physical change in the appearance of his opponent. That was when a tight grip locked around his arms and legs from behind. A misshapen, androgynous, humanoid abomination with a tail lacking Cell's stinger wrapped its limbs around Yamcha from behind, locking him up and holding him in place. The creature's head looked split down in the middle, almost as if it was meant to have horns similar to Cell's, but the humanoid composition of its skull didn't let such horns fully form.
"While you were submerged in all that smoke and rubble, I used the chance to create a Cell Jr. that could attack you from behind. You see, I am a Bio-Android composed of cell samples of multiple different species. By expelling a sample, I can create an altogether unique version of myself I call "Cell Jr."," Cell explained what had just happened to his poor, entrapped prey. "Now, Cell Jr., I've made you using human and Saibaman cells. Self-destruct for your progenitor and the betterment of your species!"
"W-Wait, what!?" Yamcha freaked out. "You don't actually intend to self-destruct, do you? You were literally born just now! You've got so much to live for…"
The humanoid Cell Jr. silenced Yamcha's plight with a shrill shriek as veins bulged out all across its body and its body lit up from the inside. Yamcha began thrashing about, desperate to wrestle out from the tight clutch of the enemy as this Cell Jr. possessed every tiniest bit of power that Cell had. Yamcha curled up in a fetal position to try to reach for his forehead with his entrapped fingers. Before he could even come close, Cell Jr. bloated up and detonated with a devastating explosion that boomed off in a cone of heated dust and scorched its trail all the way into space.
When the rumbling eased up, the red atmosphere of Planet Banna appeared to have been utterly decimated, with a gigantic hole peeking into space, peering through the layer of soft, cherry-red clouds. The self-destruction of the Cell Jr. had utterly leveled the confectionary treat houses and left a few of them charring in blazes while the chocolate and cream glazes covering the mountains and hills melted and began pouring down with boiling cream bursting forth from within cake and muffin-like mounds and shooting off into the air like magma. However, whereas Planet Banna had suffered significant damage, Yamcha did not.
The martial artist hovered in the air with his arms and legs spread off to the sides, coated with a rowdy Kiai bubble of a defensive Ki shockwave that blocked out the blast from causing him any harm. Cell, who could only observe the charred remains of its precious Cell Jr. containing the clusters of Earthling and Saibaman cells melting in a volcanic flow of bubbling hot cream down below, turned to Yamcha with a look of shock on its face.
"Tsk, the fact that I wasted Earthling and Saibaman cells on this attack is regrettable, however, this defensive Ki barrier technique seems useful, at the very least," Cell noted to itself with bitterness. "Oh well, both Earthling and Saibaman cells are easily replaceable. Saibamen are cultivated warriors whereas Planet Earth is full of Earthlings who are easy prey."
"I wouldn't be counting on making it to Planet Earth if I were you," Yamcha canceled out the defensive Ki barrier around him and glared at Cell with a strict look. "It couldn't have been a simple sacrifice just throwing away a batch of your cells like that. I'll be more than enough to finish you off the way you are now!"
"You can always count on good old Yamcha for comedic relief," Cell mocked his opponent, adopting a fighting stance and preparing to defend itself since Yamcha's observation wasn't too far off reality and Cell was left a tad reeling and in need of some downtime before it would return to the peak level of power.
Bursting with a transparent aura, Yamcha took off charging at Cell. Mid-charge, a backward swat of Cell's tail prompted the martial artist to weave around it, which exposed him to Cell's counterattack. Cell's elbow slammed into Yamcha's gut before his tail swatted the martial artist aside the second time round. Curving and elongating like the Namekian limbs, the stinger plunged into Yamcha's chest, pumping a handful of gulps of bio-organic material from Yamcha's body.
With a shaky hand, Yamcha reached for his forehead, snapping away using Instant Transmission. He didn't use it because he thought he could escape Cell's clutches, merely to get away from the stinger lodged in his chest, since the overwhelming feeling of weakness and withering rot coursing through his body made it impossible merely to lodge it out with his own strength.
A cosmic void surrounded by colorful nebulae and starry sparks all across enveloped Yamcha while he dashed across it, racing at infinite speed toward Planet Earth. The chilling swooshing noise followed by Cell's chilling visage forming from elongated strings directly in front of Yamcha caused the two to collide mid-instantaneous transmission. The two exchanged blows, frozen in the middle of intercepted teleportations inside this teleportation zone.
Both Yamcha and Cell delivered devastating blows to each other's jaws, shattering the spacial background around them like a panel of glass. Clutching his fists and ready for battle to erupt at any moment, Yamcha looked around him as he'd experienced nothing like this before. A stream of total non-existence surrounded both him and Cell, stretching out infinitely in all directions to where even a white void became teal to the naked eye because of how far away it stretched and how much of the void occupied the eye at once. Static, two-dimensional, vertical, green pixels floated everywhere like planets in an infinite universe, with different colored vortex wormholes whirling at random far-off locations, representing slips through which one could return to a dimension where concepts such as time and space still made sense.
Yamcha winced and clutched his chest. He tore the spacesuit open to check on the wound, exclaiming in shock when he saw the flesh where Cell had stung him becoming swirled and decayed with the withering rot stretching out to encompass his whole body. It was only because Yamcha managed to escape Cell's stinger in time that his injury was localized to his chest.
"Beautiful, isn't it?" Cell looked around, similarly entranced by what the two of them created together. "This is the paradox we've caused by traversing and colliding while traveling at an infinite speed, using Instant Transmission. In here, time-space and laws of physics don't really exist, because we've shattered them together. This is not something you'd ever get to experience living in a test tube. This is just a taste of the life of freedom, the life you get to live as an apex predator. You should feel lucky, a rundown, old dog like you would never have gotten to experience this if I didn't drag you along for the ride as my precious prey."
Yamcha pressed his index and middle finger to his forehead, realizing to his horror that Instant Transmission didn't work wherever they were. They would probably need to slip back into the stream of infinite speed through one of those wormholes before they could return to the confines of their known and limited universe.
"I told you already, that concepts like time and space don't exist here. That means that Instant Transmission can't work here because there's no space for you to move instantly to," Cell scolded Yamcha by tapping its core jewel stuck in the massive horned headdress of the insectoid-humanoid Bio-Android.
"Guess we'll just have to settle it in here then," Yamcha adopted his Wolf Fang Fist pose with a determined look on his face, looking a bit content with the fact that Cell had nowhere to run to or nowhere to hide either. As the two intertwined in the clash surpassing the concepts of time-space, colliding at speeds that shattered well past the limiters of infinite speed, there was nothing other in this hyper battle dimension but them.
Cell snapped up straight up to Yamcha's face, punting him with a soccer kick and sending Yamcha flying off into the infinite void. Racing across the shifting void, Cell drove his flying foot into Yamcha's gut, smashing the overwhelmed martial artist through the panel of two-dimensional teal vertical pixels and reducing it to sparkling stardust. Shifting with the kicking feet, Cell delivered a spinning combination of roundhouses before vaulting over and kicking Yamcha down with a vertical roundhouse kick barrage. Snapping away with high-speed movement, Cell appeared below where Yamcha was supposed to shoot through and kicked Yamcha straight in the back, shooting him off high up.
Reeling and clutching his aching ribs, Yamcha scrambled back to a stationary position and regulated himself in mid-air, wincing in pain, bruised and battered. Cell has managed to power up substantially after leeching off some of Yamcha's Ki earlier. He was no longer an opponent that Yamcha could just handle with a handicap. Even if he employed all the techniques available to him, it would still require a creative usage of them for Yamcha to survive.
Not to mention this trippy hyper-dimension. Despite Cell battering and punting him away for what felt like enough distance for him to travel around the world, the two felt like just a good fifty meters away from each other at any given moment. The common understandings of time and space truly made no sense here, meaning that Yamcha would have to abandon them completely and fully submerse in the perverse laws determining the order of this void if he was to survive.