The item appeared first in 1984, in Capcom's first title, Vulgus, as an enemy (it was also featured in Capcom's fifth title, Exed Exes, in a similar role). Since then, it has been featured in many other games in a far more benign role; in particular, it appeared in Mega Man as an item which fully restored health and weapon energy. It once again serves the same purpose in the series' most recent installment, Mega Man 10, and can only be found on the game's Easy difficulty setting.