Each character is named after a canid pack animal, with the exception of Fox, as foxes tend to hunt alone, and Hyena, since hyenas aren't canines. Appropriately, Fox was the first to leave the group. Additionally their namesakes correspond (sometimes loosely) to their personalities. For example, the character of Hyena is known to laugh easily (though maniacally), and Dingo is Australian. The Pack was the main opponent of the gargoyle Lexington, following the events of the episode "The Thrill of the Hunt" (other gargoyle characters had similar arch-foes). In the episode, Lexington revealed himself to the Pack (whom he believed were truly the heroes they seemed on television), but they turned on him. In the same episode, the Pack were revealed as mercenaries and some were jailed. They were reunited in the second series episode "Leader of the Pack", when Dingo and new character Coyote broke the others out of prison. At this point, Fox left the team, which continued to break down during the course of the season until Pack members appeared solely and not part of a group - the only exceptions to this were Jackal and Hyena, who always appeared together.
The Pack became especially dangerous in the episode "Upgrade", which saw them utilize a series of procedures (genetic manipulation, bionic implants, etc) to gain the extra strength they needed to fight the Manhattan Clan. Only Dingo refused to participate. However, while they were able to capture the Clan's elders and Elisa Maza, the younger gargoyles were still able to defeat them thanks to Brooklyn's tactical expertise.
A future plan by the show's creator Greg Weisman would have had Coyote, a robot, freeing himself from David Xanatos and reuniting the last members of the Pack (Wolf, Jackal and Hyena) into a new Ultra-Pack along with a new character. With the end of the show's production, this did not occur.
In the episode "Upgrade", Wolf underwent genetic manipulation, splicing his genes with that of a wolf. He became stronger and more ferocious, and could be considered the Gargoyle Universe's analogue to the werewolf. In his wolf form, he is equal in strength to Goliath, but not nearly as intelligent. In the same episode, his face was also shown to change, from the nearly human, though furred one, to the almost completely wolf-like one, including a muzzle and prolonged ears. His ultimate goal is to best Goliath in hand to hand combat.
In "Upgrade", they allowed themselves to be turned into cyborgs, and continued to receive upgrades throughout the remainder of the series. It was at this point that Hyena began to show lustful feelings towards the robot Coyote, a thought that even her brother finds disturbing.
An Australian weaponsmaster voiced by Jim Cummings, Dingo was one of the more sympathetic characters of the Pack. He refused to sacrifice his humanity with the others during "Upgrade", and opted instead for a powered exo-suit. Dingo, disgusted of the others, left the Pack shortly after to go to work for Fox and her mother Anastasia. In the episode "Walkabout", he joined with the nanotech creature called the Matrix, to teach it about law and order, and defend Australia.
Gargoyles Bad Guys #1- In one of their outings, they apprehend an Australia criminal Tasmanian Tiger. Afterwards Robyn Canmore comes to arrest him, because while he's a hero in Australia, he is still wanted in the United States. Robyn then offers a chance for Dingo to redeem himself, albeit through blackmail (As he would have to serve out a prison sentence and Matrix would be permanently shutdown with an EM Dissolution). They agree to join with her, with their first mission occurring in Japan.
Coyote 1.0 and 2.0 would have an actual half robot, half-Xanatos head, which would be destroyed by Goliath in "Upgrade". In subsequent episodes the half-Xanatos image would be displayed on a video screen.
In each subsequent appearance, he was destroyed again, by the dog-like gargoyle beast Bronx, by Goliath, and even once by his own Pack-mate Jackal using the power of Anubis, one of the children of Oberon. Xanatos himself used the Coyote robot, recently remade using a melted-down Cauldron of Life, to try to capture another child of Oberon, Coyote.
Xanatos (who is on a mission from the Illuminati) recruited Coldsteel for assistance and is upgrading Coyote to aid Coldsteel. The Coyote Diamond (which Xanatos bought in Her Brother's Keeper) is incorporated into his body for this upgrade.
Coyote (specifically Coyote-X) would have been one of the main antagonists of the spin-off show Gargoyles: 2198, but it was never put into production.