Reactor

Reactors are an Archetype from Yu-Gi-Oh! 5D's. They are used by Bommer in the anime. Their effects inflict 800 damage to the opponent, when they play a particular type of card.

The lettered suffixes of "Summon Reactor AI", "Trap Reactor RR", and "Magic Reactor AID" spell out "AIRRAID". Together they combine to Summon "Giant Bomber Air Raider".