[@Mugin] Well, here's the idea for my character:

All of the Espada are supposed to represent an aspect of death. I was going to make an Espada, the former #1, who's aspect of Death is "Peace". Naturally, he was #1 for no other reason than because it was damn near impossible to beat him in battle, due to his release being to create a bubble around them, inside the bubble is a realm called "Strawberry Fields". A realm of pure Reiatsu, where he pretty much makes all of the rules. Rules like:

1) Impossible to Die
2) Impossible to feel pain
3) Everybody has to be nice to Oneanother.

When he was an Espada, he would transport the others there until they gave up and he took their number. He's a pacifist. Naturally, eventually, Aizen got sick of his shit and kicked him out. He's not the kind of guy to go in balls-blazing, kicking ass and taking names. He's more the kind to sit down, make a pot of tea and try to talk it out, then, when the angry bastards tell him where to shove his tea, he just transports them to the Strawberry fields until he they are ready to talk.

Of course, I fully expect the big-bads of the RP to be able to break the Strawberry Fields bubble, which will be his "Oh shit" moment. After which, he will have to actually assume his combat form. His combat form being rather silly but as powerful as one might expect.

I'm trying to go for the Comic-relief that is secretly a super-OP badass that all Shonen have. I believe the trope name is "Crouching Moron, Hidden Badass"