In an effort to give players more ability options until I programmed more into the game, I started assigning abilities to robots based soley on their typing rather than any real reason they should be able to use them. This allowed the player to equip Bomb Man with the Crash Bomber because his element of choice is Explode Type and Crash Bomber is also an Explode Type. Even though this was fun, it required a lot of manual updating when a new ability was added and I was frequently forgetting to add new abilities to certain robot masters's moveset. As such, I've updated each of the robots to have a specific predefined "Ability Core" that determines which types of moves they can have equipped by the player. Bomb Man now has an Explode Core, for example, and that allows the player to teach him any Explode Type ability once unlocked. Proto Man and Mega Man's Ability Core's are both of the Copy Type, so they are able to equip any ability the player has access to just like before. This may have some strange effects later for certain robot/ability combinations, but we'll cross that bridge when we come to it. :)