Tiefling names follow one of three traditions, so pick the one that fits your character’s story. Many use a name from their human parent’s culture — tieflings are born to human families, so any human name works. Others carry an Infernal name handed down from their fiendish bloodline, full of hard consonants and exotic sounds.
The third and most distinctive option is a virtue name: a single word like Hope, Glory, or Despair, coined to express an ideal the tiefling embraces — or, just as often, one they were branded with and now reject. Many tieflings choose a new name in adolescence as an act of self-definition, and adopt an easier nickname for other races.