Kairo Yakazu
A couple errors.
1) Mikey was the one that screamed cowabunga like it was going out of style
2) Your squirtle's personality seems much more like Raphael's
3) Unless he becomes a leader and inherits a blue headband from a Raticate that knows nothing but Fighting-type moves, he will never EVER be Leo.
Mikey yelled cowabunga more often, but they all have yelled it before in unison.
Squirtle is named after Leo, but since he's "Serious" nature, I'm trying to play true to that. Since I can't see the nature until AFTER I name my Pokemon. I'm stuck with it. He
will be the leader of my team though. And I do plan on having him acquire a headband in the future, once he's stronger and more sure of himself. So it will still be a perfectly valid name. Plus, he
turned down my plea to yell out cowabunga. Because he's "Serious." As the leader, Leo has to be (and is) Serious anyway. Raph is more of an aggressive hothead.
Took me a while to find this video. But at the end of it, all of the Turtles yell out, Cowabunga!
http://www.youtube.com/watch?v=Ov4cZg6Shok&feature=related