Slate Mythos (スレイト ・ミーソス Sureito Miisosu) is a Sonic: Next Generation character. He is the future son of fan character Payne the Griffin and Vesper Bat as well as the older brother to Sparrow Mythos. He is an anthropomorphic 15 year old griffin-bat hybrid. He inherited his father's wind manipulation abilities.
- Slate is named after the shade of grey of the same name.