Time to see how Percy is doing, shall we? Enjoy this part of the Percy Jackson and the Omnitrix.

Fighting the giant freak

At Camp Half-Blood, Percy was doing some wrestling with Clarisse, as she says, "Try to test out a new form, Percy."

"Good idea." Percy said as he activated the Omnitrix and says "This guy will do." And presses down and gains a whole new form.

This form had the appearance of a Tiger, only humanoid, with blank green eyes, a sharp claw sticking out of each wrist, and also a mean look on his face. The tiger man roared as he says, "Rath will take you down, Clarisse la Rue!"

"Okay…" the Daughter of Ares said, looking confused. Rath roared as he ran at the young woman, his claws outstretched.

"What the?" asked Nico. He was watching for a while now, and kept an eye on the tiger-like alien.

Rath then shoved Clarisse with ease, making her go back into a wall. Rath roared as he says, "Come on, Clarisse la Rue, that all ya got?"

"You want a piece of me, catnip?" asked Clarisse, curling her fists as she ran at the tiger, ready to pound the giant, but the large cat just put a hand out and stopped her in her tracks, but then he felt a punch in the gut, making him groan.

"Why you..." growled Rath, when suddenly, he gets hit by a large boulder that came out of nowhere.

"What the…?" asked Clarisse and went wide eyed as a giant with gray armor, and also the only hint of skin was his head, which was a dark brown-orange color with dark yellow eyes, two long pincers on his chin, and also a headdress on.

"Name's Vulcanus, and I'm here for this…Perseus Jackson." Said the giant, glaring around as he saw Rath, picking up a near-by rock and threw it at the giant before he changed into XLR8 and ran at Vulcanus.

"Lets see how fast you can…" But XLR8 can't finish this, since he got swatted away by Vulcanus, and he ended up in a pile of metal weapons, and a shield hits his head. "That hurt." Groaned XLR8 as he got up.

"Bring it on, brat." Growled Vulcanus, as he cracked his knuckles.

XLR8 growled as he pressed down on his chest as he turned into Jetray "Bring it on, freak show." Growled the alien, as he flew at him.

Vulcanus punched Jetray, sending him flying. But before he could do something else, a giant pitch-black boulder came out of nowhere

Jetray looked to see Nico with his sword out, as Nico charged at Vulcanus and sliced right threw his chest plate, as the armor began to crack a bit. The whole thing then fell apart, as Vulcanus's true body is seen; he had his regular head size, but the body of a infant?

"Pathetic." Clarisse said, rolling her eyes.

Jetray looked down at Vulcanus as he hoisted him up. "Why were you after me?" asked Jetray, annoyed.

Vulcanus then says "I was hired to capture ya, but I got my own agenda; getting my body healthy again."

"What?" asked Annabeth, confused?

"This size of mine is part of a disease I got some years ago. But now I know that the Omnitrix is back, I might be able to get back to normal." Said Vulcanus, as Jetray got an idea.

"Hold still." Said Jetray as he pressed the symbol and suddenly a green beam of light hits Vulcanus, making his body gain in size.

Vulcanus smirked as he clutched his fist. "Thanks kid."

Jetray smiled and says "No problem. Now…can you explain what this thing can do?"

Vulcanus says, "I honestly have no idea, but I know who."

"What are you going with this?" asked Grover, looking at him weirdly.

"I'm saying to find the first wielder of that watch; Ben Tennyson, or Ben 10." Vulcanus said, as he gets out a strange device and shows whom Ben was.

Ben appeared to be a young man with dark brown hair, green eyes, a black shirt under a green jacket with a "10" on a black circle on it, blue jeans, and black and white shoes. On his arm was a strange, gauntlet-like watch.

Percy says "Cool…where would I find him?"

"Bellwood, California." Annabeth said, coming in with her laptop. "I did a search link on him, and I found out that he lives there."

Vulcanus nods and says, "I also have this." He gets out a chip from his suit, as he says, "Use this to download some info about the Omnitrix onto your…computer thing."

Annabeth nods as she downloads it in, and saw all the known Data on the Omnitrix was uploaded. "I guess this is just for helping you, right?"

"Yeah. Now I'm going." Vulcanus said, pressing a button on his suit as he vanished.

Percy sighs as he asks "What should we do before we go there?"

"How about you train on how to use that thing?" asked Grover, coming over. "I mean, who knows what other thing is in that do-dad."

Percy nods as he says, "Got it." He then activated the Omnitrix and turned into…"BRAINSTORM!" the crab-like alien flexed his claw as he says; "Now this is a very strange predicament. I would normally have chosen Big Chill to train, but I guess this form is as good as any."

"You going to talk all day, Jackson?" asked Clarisse as she gets out her spear. "Or are you going to fight?"

"Indeed Ms. La Rue. Have at you!" Brainstorm said, shooting out a blast of lightning, which she dodged and blocked with her spear.

"That all you got, Crab-Legs?" asked Clarisse, smirking.

"Even though that insult was childish, you will, as they say, 'eat your words'." Said Brainstorm, sending another volt her way.

(Meanwhile)

In the Underworld, Hades, a evil-looking man with dark hair, flowing robes made of souls, and a evil-looking helmet perched on his head. He glanced around, and found the Isles of the Blessed, and sighed a bit. He looked ahead and walked on…and met up with a face that he knew from the past.

This person was a young man, no older then 19, with neck-length black hair, dark blue eyes, and dressed in battle armor, a pair of winged sandals, and also a bag strapped to his side. "Hello…Perseus." Hades said, as the young man looked up at him.

"What is it?" asked the slayer of Medusa, looking up at his uncle with curiosity.

"I believe it is time for you to give that namesake of yours the advice he needed for a long while…" Hades sighed. "The one that got you to where you were at; a king."

Perseus nods and asks, "Who is this boy?"

"His name is Percy Jackson." Hades said calmly. "He has found a very powerful weapon. Teach him to learn how to adapt to this new weapon, as you did with my helm, Hermes' sandals, and Athena's shield."

Perseus nods and says "Yes…Lord Hades." He walked away at that, going to see Charon, as Hades watched.

End of Chapter 4

I hoped you enjoyed a couple of the twists I added in there, but come on, this is still Percy Jackson and the Olympians, so you'd expect me to bring in some mythology, right? So…there it is. Also…please Read, Review and Suggest away!