High defense can also mean high attack if you use Inverse Universe. Special summon your "C" in attack position when your opponent fusion summons if you have Inverse Universe already set, this will switch your monster's stats as well as your opponent. If you want to play it defensively, Spikeshield with Chain can also deal some good damage since it will increase "C"'s defense by 1600, making it 4100 defense. Take control of your opponent's monster with Enemy Controller and tribute set your "C", pair it with cards like Ghosts From the Past and you can have yourself some OTK.
Against decks that don't summon anything from the extra deck, you can still special summon it if you are using an insect type deck. Gokipon is useful to search for different insect monsters, while Pinch Hopper is to summon them. Alternatively, you can special summon a level 5 insect monsters using any other monster type if you use Insect Imitation, which can be good if you take control of your opponent's level 4 monster for it.