Creeps are subterranean creatures of Grimm that resemble both lizards and birds. They were first introduced in the episode "No Brakes". Mutant creeps are special Grimm, mutated by Doctor Merlot.

Classification: Creature of Grimm

Powers and Abilities: Superhuman physical characteristics, immortality (Type 1), natural weaponry (claws, spikes, fangs), enhanced senses(All Grimm can sense negative emotions across vast distances), reactive evolution (Grimms are able to evolve over time to be able to counter threats as well as adjust to their environment), self-sustenance(Type 2), immunity to soul manipulation(Due to the lack of a soul)|All previous plus explosion manipulation and self-destruction(Mutant creeps violently explode upon death)

Attack Potency: Wall level (Should be comparable to weaker Grimms such as Lancers and Beowolves)|Large Building level(Stronger than regular creeps, should be comparable to other evolved Grimm such as Alpha Beowolves and Ursa Majors)|Large Building level (Stronger than Alpha Creeps, Alpha Beowolves, and Ursa Majors should be comparable to mutant Beowolves)

Speed: Hypersonic combat speed and reactions|Hypersonic combat speed and reactions|Hypersonic combat speed and reactions

Lifting Strength: Unknown

Striking Strength: Wall level|Large Building level|Building level

Durability: Wall level|Large Building level|Building level

Stamina: Peak Human

Range: Standard melee range

Standard Equipment: None notable

Intelligence: Below Average (Often displays as mindless animals lacking any sense of self-preservation)

Weakness: All Grimm are weak to powers associated with the God of Light, such as the silver eyes.