Boobeam Trap

Buebeam Trap (ブービームトラップ Bu-bi-mu Torappu) is the infamous fourth Wily stage boss of Mega Man 2. This is considered by many (if not most) players as the most frustrating boss of the game, as its only weakness is Crash Bomber and all seven shots are necessary to defeat it. There are breakable walls around the screen, but only two must be destroyed. The rest can be bypassed with the three platform Items, or overcome through willingness to sacrifice a life (as long as there are plenty in reserve).

The Buebeam Trap is more commonly referred to as the "Orb Room," especially by fans.