This is actually a perfect time for a World-Building Wednesday post!
The DJ is, species wise, an elemental. Obvious, he is an electricity elemental, but he didn’t start as such; most Metacorian elementals are all born the same null element matter that does not react adversely to any elements, since the offspring of any pair can end up any element and not always those associating with the parents, and said offspring might not survive otherwise while incubating ((ie a say, plant elemental wouldn’t incubate for long if the host/incubating parent was a fire elemental!)), so until they are out of the potentially incompatible womb they are made of null matter, which doesn’t harm other elements nor is harmed by them.
The stage that a newborn elemental is a null ‘mote’ is very brief, but during that time they only vaguely resemble how they’ll appear when their inherent element activates and when they continue to grow. Elementals are for the most part humanoid, but any specific one can have a variety of altering traits, from eye and limb count ((as with the DJ)) to other things.
Of course, as we see here, those with extra limbs kinda look like wittle grubs when they’re that small :3c