Flying Turrets are cliche, also rotor blades could never hold that up and as soon as it started shooting it would start going all over the place unless it shot marshmallows or something.
Heavy Roader reminds me of something from Kirby, and it would be better if it had a cup shield going over its hand (cup shields are the guards on rapiers and shit like that)
Multicannon looks like its arms would fly off as soon as it shot something, also how does it move backwards
Moledigger is fine