The first appearance of "Tiger-Man" was in the first issue of Thrilling Adventure Stories, February 1975, a black and white magazine.
Tiger-Man is Dr. Lancaster Hill, a scientist who has isolated the chromosomes that give the tiger its strength and agility.
He is in Africa while performing his 2-year internship, working from a village in Zambia that has been using the services of a local witch doctor named Na'Bantu.
Upon his return to the United States, Dr. Hill is picked up from the airport by his sister Anna, who informs him that he received an offer letter to start practicing medicine at the Harlem Hospital on the following Monday.
After tracking down the bald cowboy to a visiting rodeo, Tiger-Man realizes that the scent on the cloth is not completely his and that he must have had an accomplice.
He stumbles upon a pack of bank robbers who are wearing electrified suits that repel bullets, but also electrocute anyone that the wearers touch.
Tiger-Man comes in on the tail end of the attack and exacts his revenge against the robbers and interrogates one of them to find out where they got their suits from.
Unknown to Tiger-Man he is being watched and pursued by the Blue Leopard, another enhanced person from the Zambian village he did his internship at.
The Blue Leopard warns Tiger-Man that this was only a dress rehearsal for the ending battle where his claws will be laced with poison instead of just a sedative.
In the present Tiger-Man leaves the hospital and sneaks into a broom closet to change into this working clothes as Dr. Lancaster Hill.
Dr. Hill is a part of the team operating on the burn victim, but the man dies from his severe trauma, but not before he utters the word "hypnos".
Finding out that the elderly woman, named Hannah Markham, was a patient at a free psychiatric clinic in midtown run by Dr. Otto Kaufmann, Dr. Hill decides he will pay the doctor a visit to get to the bottom of this mystery.
In a trance-like state, Tiger-Man is knocked unconscious by these two thugs who complain about him not having any money or valuables in his costume.
The battle moves to the building's rooftop and Tiger-Man manages to avoid the psychic rays of Hypnos.
Hypnotized by the ray, Kaufmann realizes that death is the only answer and leaps off the building, committing suicide in the process.
Dr. Hill as Tiger-Man possesses the strength, speed, agility and ferocity of an actual tiger in its most primal state.
Dr. Hill as Tiger-Man wears a unitard, gauntlets, and boots made from the hide of a tiger that attacked him, which he defeated.