Onyx Thor Share definition Flag an unborn beast of baby who will one day be the thugginest kid on the block dam look at that kid onyx thor. i wanna be just like him but too bad i cant cuz hes the only one who could ever be that cool Onyx Thor by fatherthor February 8, 2010 0 0 Get merch Get the Onyx Thor mug. Buy Now — $32.95 See more merch