Heroic Age/Nightmare Fuel


 * Cerbius, the Silver Tribe's Nodos, which looks like a combination of a skeletal human and a giant insect. A little disturbing on its own, but when it goes into Berserk Mode, it turns into a horrible, shrieking thing combining insect, demon and the monster from Alien. Cerbius's screams will haunt your nightmares... they don't sound like anything an Earthly creature would ever produce.
 * Frenzied Nodos in general are this trope: frenzied Bellcross is perhaps worst, considering he's The Hero. Up to that point, Bellcross had been an unstoppable force of good. Then he takes too much damage, Turns Red, and enters Berserk Mode. Suddenly, his power is amplified to hundreds of times his usual and he becomes an even more unstoppable force of pure rage. He begins destroying everything: hostile fleets, friendly fleets, Deimos, even himself, as his body rips itself apart under the strain of its own power... what's truly frightening about it is that there is nothing anyone can do to stop him: a Nodos is already practically invincible, a frenzied Nodos is even moreso. And the Frenzied state is contagious... any Nodos that attempt to restrain a frenzied one are likely to suffer it themselves.