It has been confirmed that Keiynan Lonsdale will be reprising his role as Kid Flash for three episodes during Season 5 of the Flash.
“You will see Wally in the first episode. He is in three episodes this season. We don’t have as much time with Kid Flash as I think everyone would like to see, but the story we have for him is really cool.” showrunner Todd Helbing confirmed to Newsarama.
Back in June, Keiynan confirmed that he would no longer be a series regular in both the Flash and Legends of Tomorrow whilt hinting that he would like to have guest appearances in the future. Appearances seem to be sooner rather than later for Kid Flash which will definitely please fans.
Season 5 of the Flash looks set to release in early October.
Who is Wally West?
Wallace F. “Wally” West (born 1995/1996) is the son of Joe and the late Francine West, and the younger brother of Iris West. He was a champion drag-racer under the alias “Taillights”. He was born after Francine had separated with Joe, having left him and Iris, so he was brought up without a father or sister. He eventually met Joe, Iris, Joe’s foster son Barry Allen and the rest of Team Flash, and became a member.
In the alternate timeline known as Flashpoint, Wally West was the meta-human speedster known prominently as The Flash. As the protector of Central City, he fought against his archenemy The Rival. He later regained his speed in the post-Flashpoint timeline, donning the name Kid Flash. After defeating and detaining the criminal known as Plunder, he was embraced by Central City and officially became known as Kid Flash to all. He was tricked by Savitar via hallucinations to open a portal into the Speed Force, getting trapped in the Speed Force to replace him. He was later rescued by Barry Allen and Jay Garrick, who in turn took his place. He assisted Barry and Jay in the final battle against Savitar, successfully saving Iris. He became the boyfriend of Jesse Wells, only to be dumped after she became too busy on Earth Two.
After Barry entered the Speed Force in order to stabilize it, Wally took over as the Flash of Earth One. Once Barry returned, Wally returned to sharing the spotlight with him. After discovering that Jesse was breaking up with him and that the team was better off without him, he decided to leave Central City for a time in order to focus on himself. He returned three weeks later for Barry and Iris’s wedding, but later continued his soul-searching journey. He eventually ended up at a monastery in China, where he was recruited by Rip Hunter to join the Legends in their battle against Mallus. After the Legends succeeded, Wally decided to stick around and stay with the Legends for the foreseeable future. However, he returned to celebrate the defeat of The Thinker, meeting his future niece. – Courtesy of Arrowverse Wiki.