Tom Cavanagh's Harrison Wells will return to the CW network’s “The Flash” in the upcoming episode “Attack on Gorilla City,” airing on February 21. A new batch of photos released by the network show the S.T.A.R. Labs crew venture to Earth-2 to save an alternate reality version of Wells from Gorilla City. The episode also marks the return of series antagonist Gorilla Grodd.

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Attack on Gorilla City (Ep# 313)

BARRY AND TEAM TRAVEL TO GORILLA CITY AND FACE GRODD -- When Jesse Quick (guest star Violett Beane) informs the team that her father (Tom Cavanagh) has been abducted, Barry (Grant Gustin), Caitlin (Danielle Panabaker), Cisco (Carlos Valdes) and Julian (Tom Felton) voyage to Earth-2 on a rescue mission to save Harry from Gorilla City. As they trek through the forest, Barry and the team are immediately captured and brought to Grodd (voiced by David Sobolov). Grodd tells them he needs their help to stop Solovar (voiced by Keith David), the leader of Gorilla City, as Solovar wants to invade Earth-1. Meanwhile, back on Earth-1, Jesse and Kid Flash (Keiynan Lonsdale) hit the streets to stop a metahuman that can control gravity, with H.R. and Joe (Jesse L. Martin) guiding them from S.T.A.R. Labs. Dermott Downs directed the episode with story by Andrew Kresiberg and teleplay by Aaron Helbing & David Kob.

attack on gorilla city

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Gorilla Grodd is a recurring character in the CW’s “The Flash.” The character is first referenced in the show’s pilot after an explosion at S.T.A.R. Labs allows the ape to escape. Episodes like “Grodd Lives” and “Gorilla Warfare” delved into the character’s background as victim to a series of inhumane, too-successful scientific experiments, leaving the simian with a slew of special powers and a serious dislike for humans.

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Gorilla Grodd was first introduced in “The Flash” #106. The character was created by writer John Broome and artist Carmine Infantino in 1959, primarily as an antagonist for the Flash. Grodd is hyper-intelligent, but also telepathic. In the comics, the gorilla and his troupe received their powers from a radioactive meteor that fell to earth in their native Africa. The troupe would go on to found the technologically advanced Gorilla City and harangue Justice League of America between bouts of in-fighting.

“Attack on Gorilla City” airs on the CW network on Tuesday, February 21. “The Flash” stars Grant Gustin as Barry Allen, Candice Patton as Iris West, Danielle Panabaker as Caitlin Snow, Carlos Valdes as Cisco Ramon, Tom Cavanagh as Dr. Harrison Wells and Jesse L. Martin as Joe West.