These are by far my favorite non-boss enemies so far in the game. You've probably noticed that alot of enemies in this game simply move until they hit a wall, and than turn around. The Cadet will move until there is a wall, and than actually jump onto the wall, and continue going.
It also happens to be the toughest non-boss enemy in the game, given that it moves fast and is constantly jumping around. This will be the only enemy you fight in Level 6(besides Commander Awesome), but that doesn't mean this level will be easy.