TimeGate was a new TV adventure game show pilot in 2002 from Televirtual, the successor to Tim Child's company, Broadsword. Watch the trailer.
The Behemoth was an armoured warrior described as less than human. It seems to be an origin point for the frightknights, Lord Fear's mindless guards.
Here's a music video for Knightmare fans to enjoy. The song is Arabella, the band is Puppy.