Archanfel - Everything
Barcas - Telepathy
Guyot - Gravity
Prukshutal - Electricity
Shin - Light
Yentsui - Warping space
Caerleon - Withdraw into pocket dimension, project three 'shadow doubles' of himself
Kabral - Biology, absorbtion
Waferdanos - Biology, expression. Of course, he wasn't meant as a weapon but as a living terraformation unit
Imakarum - Gravity, psionics
...
Kurumegnik - unknown, but has used those kinetic spheres...
Galenos - unknown, but he breathed fire.
Jabir - Completely unknown. But Jabir ibn Hayan, from whom he got his name, was an alchemist, the inventor of chemistry. Perhaps he can psionically alter substances?