Sometimes called "Wall-Crawling", this ability causes the character's skin or properties to tend to cling to surfaces. This can be from anything like suction cups to spider-like hairs with chemical coating. Occasionally, through molecular reconstruction, a character can force molecules together and "stick" one to another.
Normally, this ability is seen to allow characters to climb surfaces that normal humans would never be able to climb such as sheer glass surfaces at a 90 degree angle. These characters assume the gravity of their position and allow their bodies or body parts to stick to any surface.