<P> The Avengers headquarters was in a New York City building called Avengers Mansion, courtesy of Tony Stark (Iron Man's real identity). The mansion was serviced by Edwin Jarvis, the Avengers' faithful butler, and furnished with state of the art technology and defense systems, and included the Avengers' primary mode of transport: the five - engine Quinjet . </P> <P> The prequel comic Avengers #1 1 / 2 (Dec. 1999), by writer Roger Stern and artist Bruce Timm, told a retro - style story taking place between issues #1 and #2, detailing Ant - Man's decision to transform himself into Giant - Man . </P> <P> The team encountered new characters such as Arkon in issue #75 (April 1970), and Red Wolf in #80 (Sept. 1970). The team's adventures increased in scope as the team crossed into an alternate dimension and battled the Squadron Supreme, and fought in the Kree - Skrull War, an epic battle between the alien Kree and Skrull races and guest - starred the Kree hero, Captain Marvel . The Avengers briefly disband when Skrulls impersonating Captain America, Thor, and Iron Man used their authority as founders of the team and disbanded it . The true founding Avengers, minus the Wasp, reformed the team in response after complaints from Jarvis . </P> <P> Mantis joined the team along with the reformed Swordsman . "The Avengers - Defenders Clash" storyline crossed over between the two team titles . "The Celestial Madonna" arc linked Mantis' origins to the very beginnings of the Kree - Skrull conflict in a time - spanning adventure involving Kang the Conqueror, and Immortus, who were past and future versions of each other . Mantis was revealed to be the Celestial Madonna, who was destined to give birth to a being that would save the universe . It was revealed that the Vision's body had only been appropriated, and not created by Ultron, and that it originally belonged to the 1940s Human Torch . With his origins clear to him, the Vision proposed to the Scarlet Witch . The "Celestial Madonna" saga ended with their wedding, presided over by Immortus . The Beast and Moondragon joined the team soon after . A seven - part story featured the Squadron Supreme and the Serpent Crown . </P>

The avengers heroes first appeared in a 1963 comic