"Tch, I'd recommend against that." This man's voice is arrogant, one well-suited to sneering or haughty commands - but its current tone is closer to 'lowkey-amused exasperation'. This voice may or may not be normally familiar to the other - things like voice drops and radical shifts in attitude might obscure any audible familiarity.

But on a spiritual level? The seated man knows exactly who this is. And chances are good that he can also tell there's a demon inside this familiar-man's soul, one that certainly wasn't present the last time they spoke.

The newcomer(s??) bends to one side, into peripheral view, and examines the seated man's face with curiosity. "There's another set of us in this place, and trust me, the last thing you need is them finding their Names." A wink.

As for how visually recognizable he might be: white hair, dark skin, lavender eyes, a scar down a whole side of his face - but the guy's style of dress is wildly unfamiliar. The golden diadem featuring an uraeus? The blatantly-ceremonial crook (and... flail? the flail looks weird, but in context it's got to be a flail) casually tucked in his belt? Why is he wearing so much gold and where did it all even come from - his clothing is the quality and cut reserved for nobility, for royalty -

except for the scarlet coat. That one is straight-up your coat, fella.