If the Pack loses (which they do), then Xanatos gains valuable information about the Gargoyles' skills, as the only thing he had previously known for sure was that they were physically formidable. If the two sides destroy each other or the Pack wins, then Xanatos no longer has to deal with the Gargoyles. Xanatos arranges for the Pack to be made aware of the Gargoyles' existence and for the Gargoyles themselves to be made aware of the Pack's existence.

The first appearance of the Pack is also a Xanatos Gambit.

Also pointing out how he could just build more robots.

This was all brilliantly disguised as a bog-standard revenge plot as Xanatos reveals at the end, he cares little for revenge, calling it a sucker's game. In addition, Xanatos was also able to test his new tech project (Coyote), who made recurring appearances throughout the series. The gargoyles destroy the robot and defeat the Pack, but Xanatos's plan all along was to get an early parole for Fox her refusal to escape with the others made a big impression on the parole board.

One of the best examples is in the episode 'Leader of the Pack', where Xanatos sends a robot double of himself named Coyote to break the Pack out of prison (except for Fox, who refuses), and sends them against the gargoyles.It's not at all surprising that there are a lot of examples from the Trope Namer, Gargoyles.

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