The Tiefling fiend pact warlock paragon is Neutral Good. Having infernal power but refusing to shackle themselves to the desires of the fiend.Actually my tiefling paragon concept is. Again, looking at it from the perspective of “what do these people value and who would they look up to?” instead of “what’s the most iconic way to play this race?” I figured tieflings would probably not idealize fiend pact warlocks. That seems like a reputation they would want to get away from. So, I went with cleric instead. Same reason I avoided rogue for halflings.
Of course this only works if warlocks are independent of their patron once the pact is made.
I don't see tieflingsas a community revering voluntary submission to a greater power even if it is a god.