Sorry I don't have pictures but here's a list of some characters and what they dressed up as~

Lèon- cat

Xoc- pirate captain (complete with eyepatch and a real sword)

Itzli- hummingbird

Leotie- Tocho

Fala- (took a bite from Leotie's book) Ohanzee

Nashoba- Espowyes X3

Eruera- allowed someone to make him dress up in a shark outfit.... as long as he gets his juice...

Chimalli- dragon

Allen- assassin

Jorge- zombie

Lise- beaver

Shikoba- pumpkin X3

Nita- lost a bet and is now wearing bear ears...

Elsu- also lost said bet and is now wearing dog ears...

Waneta- vampire

Ben- werewolf ears and tail

Hialeah- a crocodile suit

Emma- honeybee

Ella- flower

Patrick- ninja

Alistair- Nessie....

Ixazalouh- bunny (because Leotie asked her to and she just couldn't say no)

Iolana- volcano

Ali'ikai- Scarlet macaw

A'Ciliz- Camazotz

If (for some reason...) you'd like to know what any other character not on this list dressed up as, ask and ye shall receive~