Well, this ought to be interesting...
01. Full name: Tieria Erde 02. Best friend: Any other Ptolomy crew? They're on the short list of people he'd be willing to give his life for... but Tieria doesn't have many friends beyond that. Except maybe Rei... but he's not sure if she's a friend or something else right now. 03. Sexuality: Neil-sexual He has no clue. 04. Favorite color: His assigned color is purple. But he's been known to wear pink and yellow on his own. The red dress was Sumeragi's idea. 05. Relationship status: Single... it's complicated. 06. Ideal relationship: I don't think he really knows. 07. Turn-ons: Again, he probably doesn't have a clue. 08. Favorite food: In head canon, he's developing a weakness for chocolate. 09. Criminal Fave Five? Not counting canon-mates - Rei, Euphemia, Momiji, Al, Lacus 10. Criminal RIVALS: Again, not counting canon-mates - Naoya, Lacus (yes, she's on both lists... She's stealing Neil! XD) 11. Crushes: Neil (Rei?) He won't admit to one when asked. 12. Biggest fear: Losing his teammates 13. Biggest fantasy: Fulfilling his purpose 14. Biggest regret: Not allowing himself to be friends with Neil before it was too late 15. Biggest insecurity: That people will see him as a lesser being or associate him with world domination for what he is 16. Bad habits: Not expressing himself enough 17. Best kept secrets: All of them...? Not really. He's kind of opened up lately. 18. Last decision: To tell Rei about Ribbons 19. Worst sexual/romantic experience: He hasn't really had any that he could compare things... 20. SENTIENCE ACUMEN IS... not Sentience? Tieria's not really partial or impartial to either.
BONUS, FOR THE SUPER-CREATIVE: Considering it actually happened in canon, seeing anyone he cares about die in anyway would sort of push him over the edge for a while.