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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 are creatures with slimy teal bodies that are protected by Spiny Shells. Their name might be based off of Spike Tops.
Spike Blops reside in the Trash Pit and the Pump Works. They can only be damaged by hammers and some Special/Bros. Attacks like the Green Shell. Mario and Luigi cannot jump on them in battle to attack or even in the overworld 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.
In battle, Spike Blops attack by shuffling across the screen towards a bro and must be countered with a hammer swing, dealing damage. They also will jump up to and crawl along the ceiling to fall spikes first on Mario or Luigi to attack; their shadow indicates where they are aiming. This attack is countered with a hammer swing as well.
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