Created by writer Roy Thomas and artist John Buscema, the character first appeared in Prince Namor, the Sub-Mariner #5 (September 1968).

[3] Todd Arliss debuted in Prince Namor, the Sub-Mariner #5 (September 1968), created by writer Roy Thomas and artist John Buscema.

Desperate to regain his swimming ability, Arliss willingly participates in an experiment by scientist Lemuel Dorcas, who splices his DNA with that of hero Namor and a tiger shark.

[7] Although successful, the process changed Arliss both physically and mentally, endowing him with razor-sharp teeth and gills and making him savage and predatory.

[8][9] Becoming a supervillain and calling himself Tiger Shark, Arliss finds and threatens Lady Dorma, demanding to be crowned Lord of Atlantis.

[14] Once free, Tiger Shark discovers he is losing his powers and teams with the villainess Llyra against Namor and his allies Stingray and the Human Torch.

[17][18] Tiger Shark, Dr. Dorcas and Atlantean warlord Attuma seize the island Hydrobase and again battle Namor, who allied with Doctor Doom.

[35] The character appears next — again in mutated form — in the title She-Hulk, and is imprisoned in the prison facility called the Big House, where inmates are kept at miniature size.

Escaping with several other inmates at microscopic size by riding on the back of heroine She-Hulk's hand, Tiger Shark and the other villains emerge and attack when she visits a law firm.

[36] Tiger Shark appears (in human form) during the mass supervillain breakout at prison facility the Raft[37] and is recaptured, along with fellow villain Armadillo, by the group the New Warriors.

[39] In the 2007 limited series Fallen Son: The Death of Captain America, Tiger Shark steals an artifact called the "Horn of Gabriel", and uses it to summon huge sea monsters and direct them against the surface world.

[40] Tiger Shark also features as part of a supervillain enclave being solicited by new crime boss the Hood, who hopes to take advantage of the split in the superhero community caused by the Superhuman Registration Act.

[46] Tiger Shark joins a new version of the Lethal Legion, led by the Grim Reaper, in a three issue limited series which ties into the 2008-09 "Dark Reign" storyline.

While complimenting Osborn on activating Tiger Shark against Deadpool, Quasimodo states that he can be a valuable ally with only a few compensations in line like food, frequent combat, and women.

After Dr. Dorcas' experimental genetic engineering process, he becomes an amphibious humanoid with the traits of a human, an Atlantean (Homo mermanus), and a tiger shark.

[33] This vastly increased his physical abilities due to excess bulk and muscle mass, and he even gained a healing factor powerful enough to regenerate damaged brain tissue over time.