In Mission: Earth, viewers learn that he is very lonely and desires company; he happily plays with the captured Noah in "No Space Like Home" - much to Maximus' chagrin - and many ending sketches depict him as being friends with Sparky. Also, in one sketch, he claims his full name is Minimus Von Petty Underling. The name is Dutch (or so he says). Despite having been claimed to be feline-looking, his design makes him more chimp-like in appearance, especially when (during the episode Strange Case of Minimus-Hyde) his head was stuck in grumbler mode, he transformed into a giant, hulking, ape-like beast.
Minimus was voiced by Len Carlson until his death in 2006, and is currently voiced by Dwayne Hill.
His 'good' face sports eyes with white sclera and black pupils, while his 'evil' face's eyes have yellow sclera and red pupils.
His voice changes as his face changes. His 'evil' voice is gruff and accusing, while the voice of his 'good' side is meek and somewhat nasally.
He is the only character who has no mentioned parents or siblings.
Minimus' grumbler face's voice resembles that of Buzz from Cyberchase.