Fans got a chance to finally enjoy a live-action battle between popular anti-heroes and villains on the big screen in Venom: Let There Be Carnage. The sequel relied heavily on special effects, which showcased how important it is to use good computer-generated imagery when bringing a character like Carnage to life.

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Of course, not every movie villain has received the same treatment when it comes to special effects. There have been quite a few characters who disappointed fans due to disastrous examples of poor CGI. Some of these poorly-realized villains have certainly made their mark in cinematic history, though it wasn't always for the best reason.

10 Voldemort's Original Face Was Poorly Designed In Harry Potter And The Philosopher's Stone

Voldemort and Professor Quirrell's head in Harry Potter

The later appearance of Voldemort in the Harry Potter film series featured a fantastic design and makeup work that helped Ralph Fiennes bring the evil wizard to life. However, his first appearance in 2001's Harry Potter and the Philosopher's Stone featured terrible CGI and a puzzling design. In the film, Voldemort secretly used his dark magic to possess the body of Professor Quirrell.

This resulted in Voldemort's face growing on the back of Quirrell's head, though this wasn't executed well. The CGI face just looked odd on the back of actor Ian Hart's head. It also didn't match either the book's descriptions or Ralph Fiennes' later take on Voldemort. This is just one of the few harsh realities of rewatching the Harry Potter movies.

9 The First Design For The Abomination Lost The Features That Made The Character Unique

Abomination from The Incredible Hulk

2008's The Incredible Hulk was actually the second movie in the Marvel Cinematic Universe. Unfortunately, a poor release and a recast main character resulted in a largely forgotten chapter of the MCU. Part of the issue was the CGI design and execution of the main villain Emil Blonsky, who would transform into the monstrous Abomination.

The character design abandoned the familiar features of Abomination from the comics in favor of a more monstrous version of the Hulk. The character's return in Shang-Chi & The Legend of the Ten Rings showcased a more comics-accurate design with advanced CGI work. Abomination has become one of the MCU's misused characters who need a redo.

8 The Matrix Sequels Introduced An Army Of Agent Smiths Who Stood Out For The Wrong Reasons

An army of Agent Smiths in The Matrix Reloaded

Hugo Weaving played a program named Agent Smith in 1999's The Matrix, though he gained new abilities that were revealed in the sequels. 2003's The Matrix Reloaded featured a powerful Agent Smith who could infect anyone in the Matrix. He created an entire army of Agents that required CGI to replicate Weaving's face a few hundred times.

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2021's The Matrix Revolutions increased his army further, though the facial mapping had improved since the first sequel. This led to visually stunning battles between Agent Smith and Keanu Reeves' Neo. Unfortunately, the CGI didn't quite keep up with the physics of so many bodies in battle with Neo's superhuman abilities.

7 Clu 2's De-Aged Face From TRON: Legacy Completely Removed The Villain's Menace

Jeff Bridges as Clu in Tron Legacy

2010's TRON: Legacy was the long-awaited sequel to Disney's special effects-heavy 1982 hit TRON, which introduced new filmmaking techniques. Jeff Bridges played two roles as programming genius Kevin Flynn and the program he created known as CLU 2. Clu was created in Flynn's likeness, but while his creator aged within TRON's virtual world, Clu stayed the same age.

While it was still an impressive use of the digital de-aging technology, Clu's CGI face lost the nuances of Jeff Bridges' performance. The digital manipulation of Clu also detracted from the inevitable face-off between the elder Kevin Flynn and his corrupted creation.

6 Steppenwolf's Original Design From Justice League Was Perfected By The Snyder Cut

Steppenwolf from Justice League

When Justice League finally hit theaters in 2017, it was after a directorial shake-up and heavy reshoots that changed the story of the film. One character that suffered from a design shift and reduced CGI expense was Ciarán Hinds' Apokoliptian conqueror, Steppenwolf. His uninspired design looked rushed and unfinished and failed to capture the power of the character.

The original director was given a chance to fulfill his vision of the movie on HBO Max with 2022's Zack Snyder's Justice League. The design of Steppenwolf was enhanced with impressive CGI that improved some of the Snyder Cut's best fight scenes.

5 Krang And Shredder's CGI Forms Failed To Impress In Teenage Mutant Ninja Turtles: Out Of The Shadows

Krang and Shredder from TMNT Out of the Shadows

Fans were excited by the announcement that the evil conqueror Krang from Dimension-X would be making his live-action debut in 2016's Teenage Mutant Ninja Turtles: Out of the Shadows. While Brad Garrett voiced the character well, the fully CGI character didn't impress fans of the franchise.

Krang's brain-like body and his humanoid mech suit also failed to mesh with live-action characters like The Shredder. The Shredder also received an exaggerated suit that broke the laws of physics and distracted from the more polished look of the CGI Turtles.

4 Jabba The Hut's CGI Form From The Special Edition Didn't Mesh With His Live-Action Appearance

Jabba the Hutt in the Star Wars Special Edition

The villainous Jabba the Hutt originally made his debut in Return of the Jedi. A scene had been filmed during A New Hope with a human version of Jabba the Hut, but it wasn't used in the final cut. An updated version of the original Star Wars trilogy was released that featured enhanced CGI additions to the fan-favorite series.

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The Star Wars Special Edition rerelease used CGI to incorporate Jabba the Hutt's later design into the previously filmed footage. The scene was odd, as fans had never seen Jabba the Hutt move quite the way he did in the Special Edition. Furthermore, his new CGI appearance didn't mesh with the practical effects used to bring him to life in Return of the Jedi​​​.

3 Doomsday From Batman V Superman: Dawn Of Justice Was A Shapeless And Forgettable Troll

Doomsday from Batman v Superman: Dawn of Justice in the DCEU

Fans were spoiled by the appearance of the monstrous Doomsday in trailers for 2016's Batman v Superman: Dawn of Justice. The general reaction to the CGI-created character wasn't positive. The live-action design for Doomsday suffered from unimpressive troll syndrome, looking too much like monsters seen in earlier movie franchises like Harry Potter and The Lord of the Rings.

While Batman v Superman featured some details from the comics, Doomsday's design largely abandoned his original appearance. Thankfully, the character did slowly develop his unique bone protrusions over the course of the battle. This helped differentiate Doomsday from other poorly designed computer-generated monsters, but only slightly.

2 The Scorpion King's Monstrous Form In The Mummy Returns Ruined The Sequel's Ending

The Scorpion King from The Mummy Returns

Dwayne "The Rock" Johnson made his acting debut in 2001's The Mummy Returns. He played a warrior known as the Scorpion King who made a pact with Anubis to lead his dark army. However, it came with a cost, and he was transformed into a monstrous scorpion-centaur in order to fulfill an ancient prophecy.

The Rock's scenes as a human made his later appearance in his fully CGI form jarring for fans. The monster didn't blend well with the live-action characters and failed to capture Dwayne Johnson's likeness. The Mummy Returns ended up creating one of the most laughable CGI villains in cinematic history.

1 The Demonic Malebolgia From Spawn Is Just One Of The Adaptation's Many CGI Failures

Malebolgia from Spawn

The popular Image Comics series from Todd McFarlane was brought to live-action in 1997's Spawn. The adaptation featured heavy use of special effects to bring the magical powers and living cape and costume of Spawn to life on the big screen. While the focus on Spawn's costume was impressive, there were other CGI features of the film that weren't handled as well.

Spawn's time in Hell featured a poorly designed world of CGI flames and a massive demonic creature known as Malebolgia. The fully CGI creature would have even looked bad in an early video game, so it was completely out of place in the big-budget movie. Malebolgia completely failed as an adaptation of one of Spawn's most powerful villains.