Jack

Jack is an aggressive, focused, short-tempered, sometimes lazy, obnoxious, mechanic and is always focused on getting rid of the cockroaches or doing something selfish. Jack often builds something to try and destroy the cockroaches or any other insect that roams his or Oggy's house, and while he has had some success more often than not his plans backfires. He also sometimes bullies Oggy, either moving him when he's in front of the TV, trying to beat Oggy in a race, or just plain going insane. He is perhaps the easiest target in the show, mainly because his rage gets him too infocused on either getting rid of the cockroaches. Even though he might be a little insane, he's mainly there to pick up Oggy's pieces or bust him out of trouble.