Alex Désert reprises his role as Julio Mendez from The Flash (1990). After Amanda Pays (Dr. Tina McGee), Mark Hamill (James Jesse / The Trickster) and Vito D'Ambrosio (Anthony Bellows), he is the fourth actor to play the same character in both The Flash (1990) and The Flash (2014). John Wesley Shipp also appeared in both series, playing the title character Barry Allen in the former and his father Henry Allen (and his Earth Three doppelgänger Jay Garrick / The Flash) in the latter.
Edward Clariss (The Rival) was actually the first Reverse Flash back in 1949 and was a foe of the original Flash, Jay Garrick.
In the comics, Wally West goes by the name Kid Flash, even in Flashpoint.
This is the first episode in which Wally wears his Kid Flash costume.