Motu is the fat mouse who is the cause of most of the trouble since he wants to eat more than the other 2 mice. He is also the baby of the group, the youngest mouse.
Lambu is more of an operations guy. He has the unfair advantage of being slightly distant and does not care for anything other than doing what Chotu tells him.
Chotu provides all the explosives and the insane ways and plans of getting even with Don and Colonel. He always has plans to try and cause massive trouble for Don.