Shadow Power (level 1)

Shadow Power, also called Shadow Power Level 1, is a power-up exclusive to Sly Cooper, and is available in "Anatomy for Disaster" of Sly 2: Band of Thieves and the second day of "Flight of Fancy" of Sly 3: Honor Among Thieves.

Use
This power-up allows you to only walk while invisible. If you bump into a guard however, he will detect you and attack. You cannot use this after being detected.

Trivia

 * Getting Huckleberry Cooper's upgrade in Sly Cooper and the Thievius Raccoonus is equivalent to the having the first level of Shadow Power.