Bob-omb

Bob-ombs are eniemies from the mario series of games, essentialy, they are living bombs. They closely resemble the Bombite species, but there are some key differences between the two, the most significant one being the way they are destroyed. Whereas as the Bombite will explode immediately on contact with a second sword swipe, the Bob-omb will lie dormant and charge itself up for a few seconds before exploding. The Bob-omb also does not have the visible timer countdown/stalking method of some of the Bombite species. Quote from The Legend of Zelda: The Minish Cap Bob-omb figurine:

"Appears in dungeons. They often gather in groups in narrow areas. Once activated, they go a little crazy. Take them out with arrows."