Adam-I420

Adam 420 was a Spartan III Incognito who was trained as a medic, however, he did know enough about fighting to hold his own.

Adam 420 preferred to wear black and blue armor in general, not being picky on whether armor set. He was also one of Jay 425's teammates until Adam was sent to Installation 03, while Jay stayed aboard the UNSC Spartan's Prayer.

Requiem
Adam had a very minor role on Requiem, being a field medic, however, he did manage to save a few Marines in the heat of battle.

Installation 03
Spartan 420 was sent to Installation 03 due to suspicion from ONI that the Promeatheans were trying to activate the Halo rings. Adam found that it was not the Promeatheans trying to activate the ring, but the Covenant's remains. Adam is currently on Installation 03, fending off Covenant forces.