Thanatos&Mors
Death, Sleep, & the Gentle End
Thanatos
The Gentle Brother
Inverted torch, butterfly, poppy, wings
Son of Nyx and twin of Hypnos; the personification of death itself.
Cold and pitiless, yet strangely gentle — he is defeated more than once.
None; he was feared and avoided, not courted.
Death as a person you can argue with, and occasionally outwit.
Mors
Mors, the Final Necessity
Inverted torch, hourglass, scythe
A Latin abstraction of death, appearing mainly in poetry and on sarcophagi.
An impersonal, legalistic necessity with no personality at all.
None.
Death as a fact of law and nature, not a god with a grudge.
Syncretism Analysis
Greek Thanatos is a character you can wrestle — Sisyphus chained him, and Heracles overpowered him. Roman Mors is a bare abstraction. Rome removed the personality from death and left only the obligation.