Spike Blop

Spike Blops are Spiny-like creatures who inhabit Bowser's body in Mario & Luigi: Bowser's Inside Story and its 3DS remake, Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey. They reside in the Trash Pit and the Pump Works. Their name might be based off of Spike Tops. They have slimy teal bodies that are protected by Spiny Shells. They can only be damaged by hammers and some Special Attacks like the Green Shell. Mario and Luigi cannot jump on them in battle to attack or even in the field as a First Strike to trigger a fight, as they will simply land on the spines, take one point of damage and most likely forfeit their turn; the two Special Attacks Spin Pipe and Magic Window, being jump-based, also cause the same thing to happen. Spike Blops attack by shuffling across the screen towards a bro and must be knocked back by a hammer swing, dealing counterdamage. They also will sometimes crawl along the ceiling to fall spikes first on Mario or Luigi; their shadow indicates where they are aiming. This attack is countered with a hammer swing as well.

Names in other languages
Zell-Stachi Blobistrice