Chuck is a games creator who Woop has 'summoned' to create games for him to play.
Woop is a being that can alter time and space and as a game he likes to play videogames.
A Snappy will turn into a Nibbles when it bites off more than it can chew. As this is quite a common occurrence, they have evolved to grow their teeth back.
Blinkys are all-seeing, so while moving about they try to avoid anything that may be harmful.
Limpa and Limpy enjoy spinning on one leg. Left to their own devices they'll quite happily walk around for hours in a circle, as they see this as dancing. However, they are still debating which leg is better to spin on.
Screamers are similar to goldfish: they can only remember a few seconds. So they continually scream thinking they are on fire, whereas they are in fact made of fire.
Bouncers like a good bounce.
Each of an Omni's legs has its own brain, which means it never really knows which direction it is going in.
Legs like walking but only in one direction, so it's not a great fan of corners.
Golems are strictly speaking not one of Woop's pets, but a creation. Used initially by Woop to get food out of his fridge, Woop later upgraded them to perform other functions and to keep him company.