History: Almost nothing has been revealed about Lockjaw's early history. However, it is now known that Lockjaw is not truly a gigantic dog, as he appears to be, but one of the Inhumans themselves, and that he possesses human-level intelligence. Lockjaw can even speak, although with great difficulty. Apparently Lockjaw originally had a humanoid form until, as a child, he was placed within the mutagenic terrigen mists as other Inhumans are. The Inhumans derive their superhuman powers from the effects of the Terrigen mists. It is now known that his exposure to Terrigen gave Lockjaw his canine form, as well as presumably, his teleportational powers. Apparently it has also given him certain canine instincts and behavioral tendencies (such as urges to chase animals).

Height: 5 ft. (at shoulder)
Length: 6 ft. 8 in. (from muzzle to hock)
Weight: 1,240 lbs.
Eyes: Brown
Fur: Brown
Unusual Features: Lockjaw has a small two-pronged antenna upon his forehead.

Strength Level: Lockjaw possesses great physical strength simply from size alone. Due to his canine physiology he is limited to what he can pick up by its shape, that is, whether he can hold it with his mouth. His mouth, however, is unusually large, as is his head, which is about 40 inches from flews to dome. His jaw strength is such that he once clamped onto the Thing's hand and the Thing was apparently unable to free it. Lockjaw possesses sufficient strength to support 3,600 pounds on his back and still be able to walk, as well as the power and physical toughness to dig through ferro-concrete with his paws.

Known Superhuman Powers: Lockjaw's major power is the ability to teleport himself and up to about one ton of additional mass (including up to a dozen people, if their combined weight does not exceed that limit), across space and even to other dimensions. In order for Lockjaw to teleport another person or object with him, the person or object must stand within a radius of about 14 feet from Lockjaw's body, and preferably be in contact with him. Lockjaw is capable of teleporting himself as little as 10 feet or as far as 240,000 miles (the distance from the Earth to the Moon at its apogee) from his original spot. It is not yet known whether he can teleport himself farther than that. The process of teleportation appears to be psionic in nature and is accompanied by a visible discharge of energy from his antenna. The precise method by which his brain taps the associated psionic energies and harnesses them for use is not known. Lockjaw requires no recovery time after utilizing his teleportation power.

The means by which Lockjaw can determine distances and spatial relationships between points of departure and arrival, including interdimensional ones, is as yet unknown. Presumably it is associated with or augmented by the use of psionic energies.

Lockjaw also possesses a sense of smell so keen that he can track or locate a scent across dimensional space. Since odors cannot physically travel across dimensions, this ability of Lockjaw's appears to be at least in part an extrasensory (psionic) one, the precise nature of which is as yet unknown.