Six Pack

Six-Pack is a group of mercenaries originally led by Cable, their roster has changed numerous times, but usually, like their name suggests, consisted of groups of six. Members included Cable, Deadpool, Constrictor, Silver Sable, Domino, Copycat, Garrison Kane, Grizzly, Rhino, Solo, Anaconda, Hammer, Contessa Valentina Allegra de la Fontaine and G.W. Bridge.

Six-Pack was first introduced into Marvel Avengers Alliance as a team-up bonus for Cable and Deadpool (called Six-Packs and Powder) but upon a third member of the team being made playable with Constrictor, the team up bonus  Six-Pack was created and is now a clear reference to the group as an entity in MAA.