The ape's eyes widened in shock as it felt something horrifying. Something had just parted its ass-cheeks to enter, and then, an incredible pain shot throughout its entire body.
Though, fighting while on the Lightning Board was complicated. Melee attacks were nearly impossible to perform, and any big swing had significant consequences for Gravis' balance. On top of that, not being able to do sharp turns took away Gravis' flexibility. Gravis could probably only use the board for chasing people or fleeing from them.
Why doesn't he use magnetism on himself and the board, that way his feet will stick to the board and he would have more freedom with movement.
Though, fighting while on the Lightning Board was complicated. Melee attacks were nearly impossible to perform, and any big swing had significant consequences for Gravis' balance. On top of that, not being able to do sharp turns took away Gravis' flexibility. Gravis could probably only use the board for chasing people or fleeing from them.