Day 1: Favorite Black Order Male Member
Day 2: Favorite Black Order Female Member
Day 3: Least Favorite Black Order Male Member
Day 4: Least Favorite Black Order Female Member
Day 5: Favorite Noah
Day 6: Favorite Fight
Day 7: Best Arc
Day 8: Most Awesome Innocence
Day 9: Most Awesome Noah Power
Day 10: Boring Arc
Day 11: Least Favorite Innocence
Day 12: Anime/Manga?
Day 13: Most Emotive Moment
Day 14: Funniest Moment
Day 15: Favorite Science Department Member
Day 16: Favorite Opening
Day 17: Favorite Ending
Day 18: Character that Creeps You Out the Most
Day 19: Cutest Character
Day 20: Favorite Quote
Day 21: The moment when you thought, "How I love this character"
Day 22: The moment when you thought, "How I wish that bastard just dropped dead"
Day 23: Chubby Earl/Human Earl?
Day 24: Sexiest Character
Day 25: Saddest Moment
Day 26: Favorite Pairing
Day 27: Least Favorite Pairing
Day 28: Character you wished made more appearances
Day 29: Favorite Manga Cover
Day 30: In general, why do you like D.Gray-Man?
http://dgrayman.wikia.com/wiki/Introduction In case you need it :)