Lose Yourself

"Ralph! Just fight it, alright? Fight it. I'll save you."

"You already did, Barry."

—Barry begs Ralph not to be taken over by The Thinker

"Lose Yourself"
Information
Season 4 » Episode 18
Episode number	87 of 184
Original airdate	April 17, 2018
Written by	Jonathan Butler Gabriel Garza
Directed by	Hanelle M. Culpepper
Guest stars
Hartley Sawyer as Ralph Dibny/Elognated Man and Clifford DeVoe/The Thinker Kim Engelbrecht as Marlize DeVoe Miranda MacDougall as Clifford Devoe/The Thinker Arturo Del Puerto as Edwin Gauss/Folded Man and Clifford DeVoe/The Thinker Bethany Brown as Janet Petty/Null Leonardo Nam as Matthew Kim/Melting Point
Chronology
Preceded by	"Null and Annoyed"
Followed by	"Fury Rogue"

"Lose Yourself" is the eighteenth episode of the fourth season of The Flash, and the eighty-seventh episode overall. It aired on April 17, 2018.

Synopsis

When Barry and Team Flash find a way to enter the Thinker's lair Ralph considers crossing a dangerous line to defeat DeVoe. Meanwhile, Joe is concerned by Harry's recent behavior.

Gallery

Videos

The Flash Lose Yourself Trailer The CW

The Flash Lose Yourself Scene The CW

The Flash 4x18 Sneak Peek "Lose Yourself" (HD) Season 4 Episode 18 Sneak Peek

Trivia

• The title of this episode directly relates to several characters and their respective plot points of the episode: Harry becomes addicted to using the Thinking Cap and in doing so alters his mind and attitude, Caitlin loses her Killer Frost abilities after finally starting to connect with her alter ego, and Ralph, along with Gauss, are absorbed by DeVoe.
• Gauss refers to Ralph as "Magnum, P.I.", referencing the TV series of the same name.
• Cisco constructs a model of the USS Enterprise, a starship from the Star Trek franchise. He also uses a Scottish accent, referencing original series character Montgomery "Scotty" Scott.
• When Harry throws around items looking for his Thinking Cap, Cisco calls him "Captain Caveman", referencing the title character from the TV series Captain Caveman and the Teen Angels.
• After Barry knocks Ralph out, Ralph describes him having gone "Thor, son of Odin" on him, using an English accent. This is likely a reference to the Marvel Cinematic Universe character of the same name.
• Cisco describes Joe to have gone "all John McClane" in a speech, referencing the protagonist of the Die Hard franchise.
• When Edwin Gauss is describing The Thinker's lair and both Devoes,he refers to Devoe as looking like Professor X. Which is a reference to the Marvel character Charles Xavier A.K.A Professor X.
• As of this episode, Neil Borman is now the only remaining bus meta for DeVoe to absorb.
• DeVoe uses Dwarfstar and Black Bison's powers to enlarge and animate a miniaturized T-rex skeleton and sends it after Ralph, saying "An old friend requests a rematch," referring to the events of "When Harry Met Harry..." and references a scene in a 'Night at the Museum'.