Gearlock is usually a calm, mellow and level-headed sort. He has a rather light-hearted, wry sense of humor, and is usually unfailingly kind and polite. He is usually always sort of detached or preoccupied with some other thought.

Gearlock is a calm, mellow and good-natured old bot. In his youth he used to be an experienced fighter, though with age he has begun to frequent the field less often, preferring to spend his time either fixing or building things instead of breaking them. He has a light-hearted if rather odd sense of humor, usually at the strangest times. He behaves in a sort of wry, bemused manner, and seems to be endowed with a limitless patience.

As a triple-changer, he can assume two alternate forms. His flying form is an unmanned transatmospheric fighter craft, capable of hovering motionlessly and direct vertical take-off. In his ground mode he can sustain speeds of up of up to 220 km/h, reaching a top speed of 250 km/h. He is lightly armored and comes equipped with a high-calibre sniper rifle in robot mode.

Inadvertantly, Gearlock earned his nickname because of his involuntary tendency to become locked in his alt mode whenever he transforms. Despite his engineering background, Gearlock has been unable to fix this particular flaw about himself since it requires compromising either one of his two modes. As a result, he just learns to live with it or sometimes needs a good kick to get back into gear. He is sometimes reluctant to shift modes too frequently because of this.

He does not reveal his real name.