Arnold Schwarzenegger is almost inseparable from his role as the Terminator in the Terminator franchise. Though the Terminator is one of his rare villain characters, Schwarzenegger’s best-known action roles are usually muscular heroes like Conan the Barbarian, Hercules, and Major Dutch Schaefer in Predator. Even when Schwarzenegger started to play more varied characters, beginning with the comedy Twins, in which he and Danny DeVito play long-lost twin brothers, the characters still highlighted his status as an action movie star, his physical strength, and his way of switching between stoicism and cheerfulness.

https://screenrant.com/arnold-schwarzenegger-terminator-batman-robin-similarity/