Aidan Tintreach was a S.H.I.E.L.D. agent who, along with his partner Susan Storm, tried to smuggle Doctor Borkof through the Hungarian Defence Forces' border so they could deliver the package into S.H.I.E.L.D. custody. As Aidan readied their papers for crossing, one of the guards became suspicious of Susan due to her hastiness with passing. This made her lose focus of her invisibility powers, which were projected over doctor Borkof, allowing the guards to see him. This caused Aidan to grab the guard's gun and knock him out with it as he started to shoot it while he told Susan to hurry over to the other side. Susan cloaked herself and Doctor Borkof, but the falling snow made it easy for them to spot their shadows and footfalls. Susan was going to kill a guard with a gun, but Aidan ended up hitting him in the back knocking him unconscious. The three of them then sprinted as fast as they could until they hopped into their getaway vehicle which was being driven by Nick Fury. As soon as they both of them made it back to New York City, Aidan wanted to spend some personal time with Susan, but she reminded him that she was engaged, plus she had a day job as the Invisible Woman of the Fantastic Four.