Lee also wrote the Avengers comic book, composed by the most prominent heroes of the editorial. He eventually removed all of them, save for Captain America, and replaced them with villains from other comics: the Scarlet Witch and Quicksilver from the X-Men, and Hawkeye from Iron Man's adventures in Tales of Suspense. The team was known as "Cap’s Kooky Quartet". Although common in later years, such a change in the roster of a super hero group was completely unprecedented. Lee and the following Avengers writer, Roy Thomas, hinted to other Avengers being romantically interested in the Scarlet Witch. Those plots were not continued at the time, and the twins were removed from the team after a crossover with the X-Men. Some years later, Thomas started a long-running romantic relation between the Scarlet Witch and the Vision, considering that it would help with the series' character development. He elected those characters for the relation because they were only published in the Avengers comic book, so it would not interfere with other publications. The first kiss took place during the Kree–Skrull War arc. Thomas also added Hawkeye into a love triangle with both characters.