Question:  The Walt Disney Company acquired what comic company that has fictional supervillain, that is a foe of the Avengers and the X-Men?
Sentence (from "Viper (Madame Hydra)"): Viper (real name Ophelia Sarkissian, formerly known as Madame Hydra) is a fictional supervillain appearing in American comic books published by Marvel Comics.
Relevant evidence: Yes