You guys keep going on about how Mika or some other character is short.
No. Look at how they move. They're on Mars, which has just a fraction of Earth's gravity, yet no one bounces in the slightest. They can walk and run just as we do under normal Earth gravity. The only explanation is that they are much heavier, to a degree inversely proportional to the lowered gravity of Mars. They're not more DENSE, they're just larger.
Mika is like, fucking 9 feet tall.