Ath doesn't look weak but Ducky is a glowy angel so I'd bet on him.

Jurinjo, I think.

Juringo, he definitely looks a lot more dangerous as well as shadier than innocent looking Ulti.

OMG.... um... Arikana.

Arikana, as she seems sort of evil and actually has some kind of weapon.

Ducky! =o

Ducky looks more prepared.

Ulti.... They have the look of a person who is secretly evil.

Saiyouri...But it would be because Rinni choked on her noise maker...

Sai.

Espy. Hiding the sword against that belt-jacket thing is genius! :3

Arikana.. claws + horns + demon eyes + wings wins over sword.

Ari ^^;

Probably.. Ultima.

Ulti would win! Besides, she's got magic powers! owo

Ari. Ae looks like he could hack the crap out of any system, but Ari's got demonic magic.