Thunder is Zeke‘s warhorse. He is black, but carries the marks of Bucephalus – a white star on his forehead and one blue eye.
He is Bolt‘s mate. His dam is Gullfaxi, a horse equally as fast on water or in the air as she is on land, and his sire is Longma, a scaled horse who is part dragon. Hs granddam, is a man-eating mare of Diomedes, and his grandsire, is Bucephalus, born of a pegasus and the nuckelavee.