Flea

Flea Swarm (Creature 5), Giant Flea (Creature 3)

Flea swarms and giant fleas make for natural pets and monstrous minions for creatures who live in areas of filth and concentrated populations. Goblins and gremlins are unperturbed by fleas' disturbing physiologies and are unfazed (though not necessarily unaffected) by the diseases these vermin carry. Ratfolk have been known to tame giant fleas for use as mounts, and urban-dwelling druids whose magic focuses on blight or disease naturally find much to like about the flea swarms they frequently summon.