A3 (Earth-616)

Along with Number 8, A3 captured Angel.

While Number 8 detected other mutant presence, and proposed for further investigation, A3 denied him, stating that their programming was defined for them only to capture one mutant, and that they had nothing else to do than headed back to their base, the Station Alpha.

It was seemingly 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.