While IT Chapter Two aside, it was still quite profitable - it's likely that the miniseries will start to fade into the background. Or at least that will probably happen for future generations, people that didn't grow up with it as the definitive adaptation of Stephen King's epic novel.
For those around in the 1990s, it's doubtful that the memory of IT's miniseries will ever fade, thanks to the efforts of Curry as Pennywise. The casting for the miniseries wasn't bad overall, with a great job done on the kids especially, but it's not an exaggeration to say that Curry makes the miniseries the classic many regard it as. Curry is so creepy, scary, and gleefully evil that one can't take their eyes off him whenever Pennywise is onscreen. He's almost as mesmerizing as IT's deadlghts.
That said, Pennywise was far from the only form taken by IT throughout the miniseries' 3-hour-plus running time. Without any further ado, here's a rundown of every IT transformation to be seen in the two-part program.
Pennywise the Dancing Clown (Tim Curry)
Of course, one can't talk about IT's various forms without mentioning Pennywise the Dancing Clown, although it would take Pennywise until 2017 to actually dance onscreen. As mentioned above, Tim Curry is absolutely magnetic in the role, and as great as Bill Skarsgard did in the movies, Curry will remain the definitive Pennywise for many.
Ben's Dad (Steve Makaj)
Played by prolific Canadian character actor Steve Makaj, Ben Hanscom's dad appears as a posthumous character, kind of. During Ben's first encounter with IT, the creature tries to lure him in by disguising itself as his dad, who Ben says was a fighter pilot shot down in the Korean War. It's very unsettling, but sadly is a bit too brief.
Swamp Skeleton (Tim Curry)
When pretending to be Ben's dad doesn't do the trick, IT immediately turns into an algae-covered skeleton and reaches out of the lake to try and grab Ben's leg. The skeleton is a special effect, so no actor physically plays it, but Tim Curry does voiceover work as it taunts Ben.
Georgie Denborough (Tony Dakota)
IT's most famous scene, in both the book and its adaptations, is the early encounter that ends with Pennywise killing Bill Denborough's little brother Georgie. Several times later in the miniseries, IT uses Georgie's image to taunt Bill, including one time with a picture that inexplicably bleeds.
Mummy (Tim Curry)
This variation of IT that looks like a mummy is also (seemingly, no separate actor is credited) played by Tim Curry, and Curry's voice can be heard speaking to Stan as he's lured into a creepy old house while bird-watching. Notably, Ben encountered IT's mummy form in the book, not Stan.
Werewolf (Tim Curry)
In part 1 of IT, the kid Losers' Club heads to their local Paramount Theatre to take in a screening of the 1957 film I Was a Teenage Werewolf. The next day, Richie Tozier encounters a werewolf in the basement of his school. For lack of another credit, one assumes the werewolf was also Tim Curry under make-up.
Alvin Marsh (Frank C. Turner)
Frank C. Turner, another veteran character actor, played Alvin Marsh in IT 1990, Beverly's abusive father. At least in this version, he doesn't appear to be sexually abusive, but it's doubtful that comforts Bev when he's slapping her around. IT takes his form more than once, always to taunt Bev.
Gas Station Attendant (Boyd Norman)
Boyd Norman's gas station attendant only appears in one scene, but it's a good one that many people . Bill's wife Audra has followed him to Derry, and stops to ask for directions. The conversation gets creepier until the attendant is revealed to be IT in disguise, with Pennywise asking Audra if she wants a balloon.
Mrs. Kersh (Florence Paterson)
The scene where Beverly Marsh returns to her childhood home is a very memorable one in King's book, and both screen adaptations. While there, Bev meets Mrs. Kersh, who appears to live there following Alvin's death. Of course, the scene gets weirder and weirder until it's revealed that Kersh is actually IT, messing with Beverly.
Belch Huggins (Chris Eastman)
Reginald "Belch" Huggins is one of Henry Bowers' gang of juvenile delinquents, and while definitely a bully, he's not the monster Henry is. That is until he returns as an IT-powered zombie to help Henry escape from Juniper Hills and target the adult Losers' Club.