Need Help with a Name

[casualplayer]

Vanguard (early career):

Gunmetal - metallic brick, body is covered in riveted metal plates (Thing analogue)
Pulse - electromagnetic blaster, fires electric blasts and can levitate magnetically (Human Torch analogue)
Gatecrasher - teleporter (Mr. Fantastic analogue)
Bonsai - shrinking martial artist with plant control powers (inspired by Mattingly, Invisible Girl analogue)

You could call him Geebee Peejee (GBPG) after the first initials of the Vanguard Four.

This is a Marvel Super-Heroes RPG conglomerate of powers! More seriously, I like Arkham's suggestion of Gestalt (first name that came to mind from your initial post.) Also Synthuman, Understudy, Carboncopy, Clone, Vortex, Reservoir, Axis, Sycophant, Ersatz or Cosmonaut (after the cosmo-ray.) More info suggests more names. Hope I helped.

[DocSamson]

Tesseract
tes·ser·act (ts-rkt) Pronunciation Key
n.
The four-dimensional equivalent of a cube.
[Greek tessera, neuter pl. of tesseres, four; see tessera + akts, ray of light; see actino-.]

[Doug McCrae]

Phalanx

[McManus]

Cohort