Shroob-omb
A Shroob-omb is a giant purple Shroob Bob-omb used by the Support Shroobs during their battle with the Mario Bros. of past and present. The Support Shroobs would toss the Shroob-omb at the Mario Bros., engulfing the heroes in an explosion. After the explosion, another Shroob-omb would be dropped into the battlefield by a Shroob UFO. Shroob-ombs have extremely high defense, meaning it is almost impossible to directly destroy these massive bomb creatures.
Only three Support Shroobs are needed to lift one Shroob-omb, indicating the bomb is extremely light. In fact, even two Support Shroobs can lift the Shroob-omb if one of the Shroobs is destroyed, although the two remaining Support Shroobs will flash red under the stress. Ultimately, if two Support Shroobs are destroyed, the Shroob-omb will prove to heavy for the sole remaining Shroob. This last Support Shroob will be crushed and destroyed under the weight, and the Shoob-omb will roll off, either into the Mario Bros. or Commander Shroob.