Gliding

Gliding is Tweek's special ability.

Holding down the jump button whilst in mid-air will cause Tweek to glide (but not fly, as his wings aren't big enough yet). Tweek will never run out of breath whilst gliding, which can sometimes lead to several glitches. To drop down, let go of the jump button. Pressing the jump button again still in the air will cause Tweek to glide again.

As is to be expected, gliding can also prevent Tweek from receiving gravity based injuries that the other Fur Fighters cannot prevent.

Trivia

 * Depending on what iOS system you are using, gliding with Tweek on Viggo on Glass on an iPhone can be extremely frustrating as Tweek rotates a full 360° turn constantly when the jump button is held down.