Doom-shroom is a recurring character within in the Plants vs. Zombies franchise. Doom-shroom is a mushroom plant who often serves as an explosive plant, exploding into a large mushroom cloud typically with an accompanying "DOOM!!" onomatopoeia, dealing massive damage to all zombies within its range.
As of Plants vs. Zombies 3, Doom-shroom has appeared in six games, with a cameo appearance in one.