Superhero Fight Club shorts
- "Crisis on Earth-X, Part 1" Eobard Thawne/Reverse-Flash and Harrison "Harry" Wells (special guest star)
- "Crisis on Earth-X, Part 2" Eobard Thawne/Reverse-Flash and Harrison "Harry" Wells (special guest star)
DC's Legends of Tomorrow
- "Crisis on Earth-X, Part 4" Eobard Thawne/Reverse-Flash and Harrison "Harry" Wells (special guest star)
- In comparison to the other series regulars on The Flash, Cavanagh has portrayed the most alternate versions of a character.
- Cavanagh has played multiple versions of Dr. Harrison Wells: Eobard Thawne/Reverse-Flash (as Harrison Wells), "Harry" Wells of Earth Two and "H.R." Wells of Earth Nineteen; alongside Harrison Wells of Earth One and Hannibal Bates (as Eobard Thawne) in the first season, Grodd and Iris West in the third season, and the Council of Wells in the fourth season.
- In the shared multiverse, Tom Cavanagh, Matt Letscher and Victor Garber portray Professor Eobard Thawne/Reverse-Flash; Cavanagh portrays Eobard disguised as Harrison Wells throughout The Flash, Letscher plays the character's original likeness, and Garber briefly plays him disguised as Martin Stein in DC's Legends of Tomorrow. The three actors previously have played roles on Eli Stone; Cavanagh portrayed the title character's father, Letscher played Eli's brother and Garber played his boss.