OF COURSE WE KNOW HOIS WHOLE DEMIGOD STORY AND HE'S FUN AND EXCITING AND FUNNY WITH HIS STUFF. Jason's fun but not so yeah kinda boring. AND PERCY HAS A WAY COOLER NAME

I don't really know anything about Jason. So for now, I pick Percy.

We must always no Perseus or his Dyslexia and ADHD!! He has a stronger life and not even as funny as Jason...Percy may act stupid. But he does have a brain under there with funniness.. Greeeks rule!! Romans? I won't even last in that domain...Lupa would eat me!! Go Percy

Who picked Jason!!

Me. I'm giving Jason the benefit of the doubt. After all, according to his memories, he defeated Krios. Whereas, Percy didn't actually defeat Kronos. It was Luke who ultimately did it. If Jason beat Krios on his own (or with some small help from his friends) then that automatically makes him a better fighter and a better hero in my book. If Mount Othyrs didn't fall, then maybe the Titans would've had enough strength to continue their attack on Olympus, and take over the world. After all, the Olympians didn't really have all the support they had during the First War.

Not to say that Percy isn't a great hero...

But countering that, Percy did go on four quest and a battle mission to blow up the Princess Andromeda. Also we have "Bob" the Titan formally Iapetus, Kronos brother.Percy tackled him into the River Lethe and Managed to stay dry despite being in a weakened state. He fought with Hyperion and won. He fought that Child of Gaea and Poseidon(forgot the name) and won. He fought that Cyclopes(forgot the name) with Clarisse,Annabeth, Grover, and Tyson and won. He fought the Swine thing(forgot the name) that even Hercules didn't beat and won. He held out in a fight with Kronos for pretty long, which is impressive even if he didn't kill him.

All in all we know Percy has proved he is a Hero again and again, but we only know a bit about Jason.

He only held out as long as he did because of his curse. Imagine Jason fighting Krios without even being almost invincible. Also, we don't exactly know much about Jason's accomplishments either. Also, he beat a Giant, which is more powerful than a Titan. Also, a sea monster, and whatever else he said in TLH.

I'm not saying that I think Jason is better than Percy, but I'm giving him the benefit of the doubt, meaning I'm keeping an open mind about his past accomplishments. Who knows, maybe Jason really did accomplish more than Percy. Maybe RR will make another book like the Demigod Files for Romans, to tell Jason's story (but it'll probably be long).

True that Partypony

Percy all the way!! but to be invincible he had to take a dip in the what ever the river was called wich was tres dangerous. of course jason is just as great!!!

In my opinion Jason is bland and boring. Percy is awesome and funny. Percy all the way!!!

Percy is the best. Percy all the way,forever!!!

Percy is sooooooooooo much better. Jason bothers me. He is so serious, boring. . . yah i hate Jason. Percy is a true hero by his actions and his heroic heart.
Last time I checked Percy was offered to become immortal, pretty much a god. Jason never got offered that. we know this because that is something he would remember, and he probably would have accepted.

Definately perseus

Percy!!!

Defo!!!! No doubt about it! I like Jason but...there just nothing about him that makes me love him... Percy is and will be my fave throughout!!!!!

Percy fan so yea....

Percy Rocks

It's just that Percy has humor as Jason is soo serious! That's what I say and Kronos is much stronger than Krios....remember that Krios is not that powerful and that he was not really much and he was the one wearing the horns....*HAHAHAHAHAHA* so Percy was strong enough to even go in the River Styx, as I can see Jason as the one who would fall for higher power like Thalia....people usually have same fatal flaws...as well, that Percy did help CHB and other gods have more respect....theres more reasons but i barely listed

he killed kronos i mean i know jason killed krios but he sucked as a titan