6R detected Banshee when he infiltrated the Sentinel Headquarters to stop Larry Trask.[1] He was possibly among the Sentinels to take him down. It was presumably destroyed along the other Sentinels Mk II when they headed to the Sun, believing it to be the source of the mutations and intending to cancel it. See the abilities and functions of the Sentinels Mk II. Search this site for: 6R ยท 6R (Earth-616).
Mentor shared a similar history to his Earth-616 counterpart. Tony Stark discussed how he was introduced in Iron Man #55 alongside other Titanian Eternals. Search this site for: A'Lars (Earth-77640).
