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|environment = [[Mines]]
'''Bomb Grimace''' is an alternate version of [[boir:Grimace|Grimace]] that spawns [[Objects#Red Bombs|Red Bombs]] for Isaac to use.
In the boss fight against the [[Tuff Twins]], a couple of Bomb Grimaces will be found across the room to provide free explosives to use on order to defeat the boss.
|environment = [[Mines]]<br>[[boir:The Depths|The Depths]]<br>[[boir:Necropolis|Necropolis]]
'''Quake Grimace''' is an alternate version of [[boir:Grimace|Grimace]] that periodically fires a rock wave in which ever direction it's facing. It does not stop, even if the room is cleared.
It appears to be a normal-enemy version of [[Great Gideon]].