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Bob-ulks are purple Bob-ombs that are the strongest and most armored variant of Bob-ombs. Their name is word play on "bulk", meaning very large. Bob-ulks are solely found in Paper Mario: The Thousand-Year Door's Pit of 100 Trials. Goombella says that they are the biggest Bob-ombs she has ever seen, despite their slightly weaker variant, Bulky Bob-omb, being slightly larger in the Tattle Log.
Just like their relatives, Bob-ulks always go through the following pattern of moves:
Also like their relatives, Bob-ulks can be instantly detonated with any fire or explosive attack (except Clock Out), dealing 4 damage plus any accumulated boosts to Mario, his partner, and all other enemies. The explosion creates a chain reaction with other Bob-ulks.
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