Disclaimer: I've been waiting for something like this. For some of my characters their symbiote others are semi-psionic spectral entities that are native to the varying levels of the 'Void' - essentially the whole Soul Sight/Void Sight thing is just glimpsing into their native habitat and they are native to the deeper layers in themselves. So forgive me for going on a bit with this.
Jake Love (Flea Mark Evil/Tempest/Terror/Siege) - Jake's subspecies of the Flea specie has this unique trait of being able to step into the Void - ICly this has always been represented by the use of the Stealth and Hide powers and as a result Jake's always been able to glance into this aspect if he wanted to.
He's symbiotically linked with an entity that calls itself The Wraith. The Wraith came into being with the death of another dimension, the result of an entire world's emotions of fear, hatred, anger, sorrow etc. at the point of death, manifesting in the form of a singular psionic entity born of pure emotion. Over time this entity has fragmented (as will be seen in following characters) but the original Wraith still remains. The Wraith is partially responsible for the divide of the Flea specie - which sees them born in pairs, sharing half a soul each - one is physically stronger but less intelligent and cunning, the other weaker, capable of walking the Void and much more cunning.
When Jake was born he was born alone - and linked directly to the Source of the Wraith subspecies rather than a sliver as his other kin had been. Outside of the Void slivers of the Wraith can become visible at will - this generally manifests in the form of flickering blue and white flames that dance over his body and eyes, the most extreme changes being crystalline armoured plating and wings though for the most part it is at any one point 90% host, 10% Wraith symbiote.
In the deeper levels of the Void (Soul Sight etc.) the ratio of visible Host to Symbiote shifts - at the deepest level it would appear as follows.
A large, pale blue-white tone humanoid form covered in pale blue crystalline plates and spines which seem to glow with flickering internal flames. The eyes glow purest white and there is no hair, no nose, no ears and no jaw though the face is angular and pointed. There is a curved crown of crystalline horns that run back along the skull of this entity and the arms end in jagged, crimson stained talons which seem to constantly drip with blood. From the back protrude six bladed wings, giving the impression of some sort of otherworldly mockery of an angel of sorts.
Beneath the Wraith-symbiote itself Jake's own soul alters. At the deepest level his own soul appears simply as him, with cold black eyes, clad in ornate black leather and silver Grecian armour, adorned with motifs and dedications to Hades, as would suit a General of the God of the Dead. When in his Hades aspect he is surrounded by a halo of pale white light and carries weapons appropriate to the era.
Jake Love (Despair 'Ascended') - An alternate version of Jake from a timeline where the Despair symbiote won over the Wraith...the fusion was never complete. The host, in time died and is little more than a crumbling shell animated by an unstable and utterly insane symbiote which constantly craves the energy of others to sustain itself. Having come back in time to prevent its 'father' from taking the course that would see it never exist Despair is a mess. His host form is cracked and dead, withered and aged and in very poor condition. Great curving spines of living black Souleater metal have erupted from a corruption of the host and completely replaced his talons.
Note: The Souleaters are the sentient blades that Jake carries, relics from his home dimension and leftovers from the event that caused it to form in the first place. For all intents and purposes they do exactly as it says on the tin - Eat Souls.
Much like his 'father' the primal form is a 90%/10% ratio which alters the further down you go into the Void. Where the Wraith was almost angelic the unhinged Despair clearly is not. Its form is deep blade with lurid green tinged metallic spines and blades arching over it. The eyes flicker shades of green to crimson and the face is just as angular but opens into a leering maw full of razor sharp teeth. Again, talons are present on hands and feet and a lashing barbed tail completes the daemonic appearance. But the form is never truly solid, always flickering, seeming to barely cling to the dead blackened shell of the host beneath it.
Jake Love (Zero - Despair Perfect) - Where Despair is unhinged, unstable and incomplete Zero is not. Another time traveller the fusion was near perfect and the host is cruel, callous and lives off of fear. One arm has been replaced by a cybernetic, ending in the same hooked talons as the Wraith-forms of the previous two symbiotes mentioned. Again, the symbiote's form varies the deeper down into the void you go with the same proportions.
The Wraith is almost angelic in its appearance.
Despair 'Ascendant' is daemonic.
Despair Perfect is, in this case a dark angel. Much like the Wraith the form is humanoid, the crystal spines and slates a deep violet over black nightshade tones of 'skin', glowing with purple flame. The eyes are crimson but most importantly the wings are black and feathered. Again there is no mouth, no nose, no true facial features however there is relatively long white hair that flows behind like liquid.
In their Wraith-forms Jake, Despair and Zero are much more dangerous than their symbiote enhanced host forms. The Wraith is inherently stronger and more resilient and adapted to the harsh environment it calls its own. The Wraith are psionic alpha predators but ultimately it is in this environment they are weakest - their greatest strength is also their greatest weakness, the link to their hosts.
Seri,
Oh, and we have a bit of a Zombie fetish....but it doesn't bleed into game...unless you count Caios, though if you call her a zombie she bites you.)