Bob-ulk

Bob-ulks are purple Bob-ombs that are the strongest and most armored subspecies of Bob-ombs. Bob-ulks are solely found in Paper Mario: The Thousand-Year Door's Pit of 100 Trials. They're related to Bulky Bob-ombs. To attack, they first charge themselves up, and then they explode after a few turns. If another explosion occurs, they explode with them. Oddly, Goombella says that they are the biggest Bob-ombs she has ever seen, however their slightly weaker sub-species, Bulky Bob-omb is a tiny bit larger in the Tattle Log. (Ironically, however, Bob-ulks have higher statistics than Bulky Bob-ombs.) Dark Fawful Bombs and Bob-ulks have a similar appearance.

After lighting their fuses, they raise their defense by three. On the third turn they raise their attack by three, and then charge themselves and raise their attack by nine before exploding.

Trivia

 * "Bob-ulk" is word play on "bulk", meaning very large.