Field Agent Keith Nance, Radiation Melee

[Wavicle]

The evil double seems to be using Radiation Blast attacks, but I am a Stalker with Radiation Melee.

[Apparition]

The Issue 25+ power sets (Radiation Melee, Psy Melee, Sonic Manipulation, etc.), were never copied over to the doppleganger NPCs.  So the system makes its best guess.

[ZorkNemesis]

Pretty sure Sonic Manipulation is on the doppelganger's list of powers, I think pretty much all the Homecoming sets are available to doppelgangers.  Testing in AE, Doppelgangers definitely have Sonic Manipulation, Electrical Affinity, and Seismic Blast (Seismic even gets the shockwaves effects),  It's the sets that weren't finished before the shutdown but still in the code, like Ninja Training, Radiation Melee, Temporal Manipulation, etc, that Doppelgangers use other sets to represent.