Ononokus is a bipedal Pokémon with a darkish yellow color covering its back and most of the front, black skin covering its torso, tail tip, and thighs and red talons and claws. It has large black and red scythe like tusks coming out of its upper jaw on the side of its mouth. Ononokus has medium sized eyes with red irises and black pupils. There is ridged plate like skin going up from its back to its head region. It has solid armor and the legs and tail have a dividing line pattern. Ononokus's arms are quite small and divided in to three digits with two oval-shaped triceps and biceps and circular elbows. Ononokus's hands are small and circular with small red claws. Its legs are formidable and strong with three toed feet with a red talon on each toe.
It's Rivalry ability raises the the base power of a move by 25% if the foe and the user have the same gender, but reduces base power by 25% if the foe and the user have opposite genders.
If the foe is genderless, move base power is unaffected.