I do not own Digimon or any of its characters.
In a forest on file island the younger generation of digidestined are looking for their armoreggs and more importantly, their partners hidden under it. Tai, Izzy, and a new kid called Takato came with them, but the three and TK went to infinity mountain to look for Devimon. When they entered the digiworld Wormmon informed them about black gears turning digimon wild again but he passed out from exhaustion before he could talk about more details. The group is currently walking trough the forrest where the cave with the digiegg of courage is supossed to be. Suddenly they hear gunshots. Bullets fly into their direction and Kari is almost hit but in the last second, Gatomon pushes her out of the way. The loud noise of the gunshots cause Wormmon to wake up.
"Ken, what happened?" Wormmon, who was carried in Ken's arms the whole time, asks.
"I don't know but someone or something is shooting at us!"
Gatomon gets into combat position and Wormmon jumps next to it.
The attacker reveals itself as it stomps down the trees in front of the group. It's a large silver machine digimon with giant revolvers as hands, on his back and on other parts of his body. His head, knees, and feet are armed with smaller guns.
"I am Gundramon and my master wants you dead!" the huge machine digimon exclaims.
[Wormmon digivolve to... Stingmon]
Stingmon tries to attack Gundramon with its Spiking stroke, but is shot down before it can land a hit.
"Do you really think you can do anything against me, a mega level digimon, on your puny champion level, hahaha" Gundramon says.
"It's on the Mega level! Stingmon get the others to safety and find Veemon! We could really use Imperialdramon right now! We will hold him back." Kari shouts.
[Gatomon warp digivolve to... Magnadramon]
The group runs into the direction where Davis remembers the cave with the digiegg of courage.
Magnadramon flies up into the air and cirles around Gundramon while shooting at it with the fire tornado attack. However, none of the attacks hit as Gundramon is protected from all sides and simply counters the attack by shooting at it. However, Gundramon can't hit a shot either as Magnadramon is too quick to be hit.
"We cant hit it when it knows where we are" Kari yells "Magnadramon hide in the woods!"
Magnadramon lowers her flying height to the point where she is under the trees. Gundramon is too large to see below the trees and due to the fact that it is a machine digimon it can't move its body flexibly enough to look down. However, Magnadramon also can't attack or her attacks would set the forrest on fire. Magnadramon uses her large dragonlike body and wraps herself around one of Gundramon legs and makes it fall down.
"Fine, if you use the forrest to your advantage, I'll simply destroy the forest!" Gundramon mumbles.
Instead of shooting bullets, the guns on his back now shoot fire to help him get up and at the same time burn the forest. The digimon living in the forest quickly run to the nearby sea to get water to extinguish the fire. Magnadramon also degenerates to Angewomon to help extinguish the fire. But she is quickly stopped by Gundramon throwing her to the ground and stepping on her. Using his "Platzenkreutz" attack he unleashed a volley of bullets on Angewomon, causing her to degenerate back to Salamon due to her use of the Mega level earlier. A lot of aquan digimon living in the sea help to control the fire and it is nearly extinguished. Gundramon is about to fire the finishing blow when two green rockets with yellow smiling faces hit it in the back.
"How about you fight someone with equal fire power?" a mysterious voice shouts.
The source of the voice is a large green robot digimon with a face that looks like that of a bear, two yellow missiles on its shoulders and a lot of other concealed weaponry, MegaGargomon.
MegaGargomon uses its Mega Barrage attack to volley fire all of his firearms. The amount of firearms is too much for Gundramon to block and it takes severe damage.
Behind Kari, she suddenly hears the familiar noise of a fighter jet. However the cause of the noise is not a fighter jet, it's Imperialdramon followed by Aquillamon and Ankyllomon. Imperialdramon drops the group off and switches to fighter mode.
Upon seeing Megagargomon Davis asks "Who is he?"
"I don't know, but he showed up when Salamon lost against Gundramon and it seems like he is on our side", Kari replies ith Salamon in her arms.
Megagarmon again shoots the two missiles on his shoulders making Gundramon temporarily unconscious. Imperialdramon uses the moment to use his positron laser on Gundramon which ends up defeating it.
After Imperialdramon degenerates back into Veemon and Wormmon a boy with short blue hair and an orange vest approaches the group. He has a Terriermon on his shoulder and another white digimon with a read triangle on its head.
"Hi, I'm Henry, Henry Wong" the boy introduces himself.
"Were you the one who helped us a few minutes ago?" Cody asks.
"Yes, I saw this digimon setting the forest on fire and almost defeating you so me and my partner Terriermon helped."
Upon seeing the D-Power in his left hand Yolei says "Hey, your digivice looks just like the one this new kid Takato has!"
"Takato is with you? I know him. He is one of my friends. He has been missing for 2 days now and I went to look for him. I saw a weird red portal at the place where he normally hides his partner, Guilmon. We wanted to inspect it when Calumon, the white digimon on my shoulder just jumped in. We went after him and ended up here."
"You ended up in the digital world? Kari asks "My brother found Takato in the real world!"
"That's bad" Ken responds "That means that the rifts that they came trough also connect with the digiworld, and possibly also other worlds."
Authors notes: Gundramon is a real digimon. It is not an OC. Its just a good digimon to introduce Megagargomon into the story. Also I'm thinking about expanding this fanfiction beyond just an Adventure&Tamers crossover. I'm thinking about adding Frontier and Data Squad/Savers to the mix aswell. Let me know in reviews what you think about that idea.