Hy there, sorry if this is known, but you can aim ROBs forward smash much like his neutral b move! I find this incredibly useful since his beam is great for launching your opponent far so you can charge your spinner. Just aim it like you would his neutral B, timing isn't that tricky.
Sorry if this is known already, but if not, more power to ROB ^_^
Sorry if this is known already, but if not, more power to ROB ^_^