I would choose Shino Aburame to transform into the classic monster Dracula. I think they have a couple of similarities and they are: 1. Ever noticed that Shino always wears sunglasses? Is it, because like Dracula, Shino also dislikes the Sun? (I know Dracula will burn if exposed to sunlight) 2. Shino always has the lower part of his face covered with his turtleneck jacket, much like Dracula uses his cape to cover the lower part of his face, so he won't expose his fangs to unsuspecting victims. Anyway, Shino would turn into the Lord of the Dark when the Sun goes down and then proceeds to terrorize innocent people and enemies alike. When Shino transforms into Dracula during battle, his skin and face become pale, he grows 2 inch blood sucking fangs, dons black clothing and a black cape. While fighting transformed as Dracula, Shino still uses chakra and his gauge slowly drains during battle, because blood which is Dracula's chakra, constantly drips from his fangs and the only way to replenish his chakra is to leech to his opponent and suck their blood. Instead of insect projectiles, he can send small groups of bats at his opponents. Dracula's 3 Ninjutsu's consist of: Gauge 1- Genjutsu which makes the opponent fall into a comatose state, so Dracula can approach and suck the blood from them causing 25 percent damage. Gauge 2- Summons the Children of the Night (Other Vampires) to come and feed on his opponent causing 50 percent damage. Gauge 3 Ultimate Ninjutsu- Summons the King Vampire Bat named Transyl to appear (like Gamabunta) on screen, he shoots Sonic Bullets (long range attack) and lunges to bite opponents (short range attack) causing up to 100 percent damage. That's my idea for a transformed Naruto Halloween Warrior.