Master Of The Universe - Vintage Battlecat Box Art by FNHot on DeviantArt (original) (raw)
When the barbarian has a steed that could eat you....
Yep, that's a very Frazetta-esque painting. Apparently they contacted Frank to do artwork for the toyline, but he was too expensive, so they got Rudy Obrero, who was good at replicating his style.
As for the concept of a barbarian riding a large, predatory steed, that is also rather common, with a few modern examples being Primal (Spear & Fang, the Vikings and their Cave Bears) and Sauria (Kindred of the Tusk and their Carnotaurus). Also adapted it for my own scenario.