Generation V introduces many Bug-types, but Volcarona and Genesect are the only two Bug-types that can learn Fly but not part Flying-type (due to that the number of types per one Pokemon is restricted to two instead of three, Volcarona is part Fire-type while Genesect is part Steel-type). Volcarona has a unique type combinations while Genesect is the first Legendary Bug Pokemon in the National Dex order.
*Which design looks better?
*Which one you could take flight with?
*Who could win in a fight between two?
*Which would be your overall preferrence?