In "Mega Man The Wily Wars," after beating the 1st 3 games in Mega Man's classic series, you unlock the Wily Tower, a game mode that lets you use ALL the weapons in the previous games. To boot, there are 7 stages, 4 of them being castle stages. The 1st castle stage has this Fire Snake as it's boss. I tried looking up it's name, but I couldn't find anything. Other than that, I just felt It had a cool design.