Trivia: Some of the film was cut in post for pacing/sequel potential. It was originally revealed that Tyler was the reincarnation of a Native American who knew Kane in the 1800s, explaining how they knew each other. Kane would confront Tangina and Diane and attempt to get them to let him inside, and would taunt Diane by alluding to remembering her being the one who "took Carol Anne away" (when she rescued her in the first film). And a slightly extended ending would have shown Kane being sent to Hell.
Trivia: Reportedly, the clown from the original film was going to make a surprise appearance during the garage scene. He'd reportedly spring up out of nowhere and begin pounding on the hood of the car, cackling wildly. But it was cut as it was worried it would feel a bit too "back to the well" and unoriginal.
Answer: He is in the first movie and is referred to as "The Beast." In this movie he is in his human form and he want Carol-Anne because he believes that she can lead him and his people into the light and crossover from this world to a better place.