Tiny Titans: The First Rule of Pet Club...

Kid Flash

Wally West, original

Beast Boy

Garfield Logan

Wonder Girl

Donna Troy

Krypto

Superboy's Super-Dog

Superboy

Kon-El / Conner Kent

Slade Wilson

Deathstroke the Terminator

Elongated Man

Ralph Dibny

Mera

from Aquaman

Speedy

Roy Harper

Lobo

DC, bounty hunter

Captain Marvel Jr.

Freddy Freeman

Kilowog

of Bolovax Vik, Green Lantern of Sector 674

Wonder Girl

Cassie Sandsmark

Stargirl

Courtney Whitmore

Aqualad

Garth

Blue Beetle

Jaime Reyes

Salakk

Archetrope

Robin

Jason Todd

Zatara

DC magician

Ace the Bat-Hound

from Batman

Terra

Tara Markov, from Teen Titans

Dove

Dawn Granger

Bumblebee

Karen Beecher-Duncan, from DC

Streaky

Supergirl's Super-Cat

Tomar-Re

Green Lantern of Xudar, Sector 2813

Trigon

demon father of Raven

Monsieur Mallah

Doom Patrol villain

Comet

Biron, Supergirl's Super-Horse

Bat-Mite

Blackfire

Komand'r of Tamaran

Plasmus

Otto von Furth, from DC

Ch'p

Archetrope

Green Lantern

Arisia of Graxos IV, Sector 2815

G'nort

Green Lantern of G'newt, Sector 68

Beppo

the Super-Monkey

Baby Wildebeest

from Teen Titans

Duela Dent

Joker's Daughter; Harlequin; Card Queen

Larvox

Green Lantern, sector 17

Lagoon Boy

from Aquaman, DC

Tim

boy with baseball cap, Dubble Bubble Kids

Myand'r

Tamaranean, father of Starfire

Match

Superboy clone

Bat-Cow

from Batman

Bombshell

Amy Allen, from DC

Golden Eagle

Charley Parker / Ch'al Andar

Offspring

Luke McDunnagh / Luke Ernie O'Brian

Brain

Pinky and the Brain

Hot Spot

Isaiah Crockett

Hawk

Holly Granger

Elastic Lad

Jimmy Olsen

Silkie

Starfire's pet

The Ant

Eddie Whit, from DC

Elizabeth the Elephant

Beast Boy's pet elephant

Fluffy

Aqualad's pet fish

Crumb Atom

from Tiny Titans

Dot Atom

from Tiny Titans

Smidgen Atom

from Tiny Titans

Bizarro-Superboy

imperfect duplicate of Superboy

Molecule

from Teen Titans

Mrs. Atom

from Tiny Titans

Poopu

Blackfire's pet

Uncle Ant

Anthony, the Ant's uncle