my choices for a Tatooed monk ... would be these:
Chameleon: A character with this tattoo can use an alter self effect once per day per tattoo he possesses. This benefit lasts for 1 hour per class level.
Monkey: A character with this tattoo gains a +1 competence bonus per tattoo he possesses on all Balance, Climb, Escape Artist, Hide, Jump, Move Silently, Open Lock, Sleight of Hand, and Tumble checks.
Tortoise: Once per day per tattoo he possesses, a character with this tattoo can use his class level as the number of ranks in a skill he does not possess for the purpose of one skill check. For example, a 4th-level tattooed monk with two tattoos can make up to two Use Magic Device checks as if he had 4 ranks in that skill. He adds his Charisma modifier to the skill check as usual.
Wasp: Once per day per tattoo he possesses, a character with this tattoo can use haste on herself. The benefit lasts for 1 round per class level.
White Mask: