The Alpha Hirogen of Prey is a veteran hunter who tracks a wounded member of Species 8472 on to Voyager and is finally beamed away with his quarry by Seven of Nine.
This unnamed Hirogen hunter, played by Tony Todd, appears in the fourth-season Voyager episode Prey. With his subordinate Beta he has pursued a lone member of Species 8472 across many light years, regarding it as the most formidable prey he has met.
Voyager finds him injured aboard his ship and brings him to sickbay. When the creature gets aboard the starship, he insists on finishing the hunt and joins the armed search, while more Hirogen vessels close in.
Janeway decides to send the dying being home through a singularity rather than hand it over. Seven of Nine, who has no sympathy for a species that fought the Borg, overrides her and transports both hunter and prey to a Hirogen ship, ending the attack at the cost of the captain's trust.