The gentle giant of the three with gray fur and an eye-patch, suggesting that his eye may have been damaged during Karbunkle's experiments. He lost his right arm in the same incident that burned off the right side of Vinnie's face and damaged Throttle's vision. His robotic arm replacement has a built-in laser cannon and has great strength. When angry his right eye flashes red. He is prone to fits of rage when he or his bros are referred to as 'rats'. He is by far the strongest of the three mice, but also seems to have the most obvious capacity to love (Vinnie's attempts are often considered to be flirting). His bike is the only one out of the three with a definite name ("Lil' Hoss"), and the one with the most demonstrated AI capability. He always references what his greyfurred mommy used to say. His first signature quote was "My momma didn't raise no stinkin' rat!".
Modo is a large grey furred muscular Martian mouse with a red and blue metal plate over his chest. There's a nick in his right ear and an two hoop earrings in his left. He wears jeans and thick black boots.
In the 2006 reboot, he was as big as his 1993 counterpart, but his face is more chiseled in the 2006 version and his hand has claws. Plus his bionic arm is slightly different.
- In the 1994 video game his weapon was Bionic crush and his ability was sky hi slide.
- In the 2006 version, he calls his bike "Hard Case".