Keiynan Lonsdale will make his return as Wally West (a.k.a Kid Flash) in multiple episodes of The Flash season 6. After first debuting on the inaugural CW show, Arrow, the character of Barry Allen was quickly spun off for adventures of his own. The show later helped produce further spinoffs such as Legends of Tomorrow and the upcoming Batwoman show. As the most consistently rated of all the current Arrowverse spinoffs, the show has comfortably run for five seasons, with a sixth officially starting filming earlier this month. Set photos from the season have already begun to emerge, with the first revealing the titular hero locked in battle with Godspeed.

Lonsdale made his own debut in season 2, emerging as the son and brother that Joe and Iris West didn't know they had. Often at odds with the core characters, he eventually bonded with Team Flash. Season 3 saw the character finally get his wish of having powers of his own, ultimately adopting the superhero identity Kid Flash. The character left the show in season 4, however, seeking to find himself; and for a time it appeared that Wally would join the merry band of outcasts and misfits known as The Legends. The actor ultimately opted to step away from the entire Arrowverse for a while, making only occasional special guest star appearances.

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Fans of the actor and the character can rejoice, however, as it's been confirmed that both will return to The Flash next season. The news broke at SDCC, and Mike Cecchini live-tweeted details via his Twitter account. In the first of two tweets, he revealed that showrunner Eric Wallace teased Wally's return, stating that both he and The Flash would team up "to fight one of the greatest Flash villains ever." Based on the reports, however, it appears that it will only be for a few episodes.

In a follow-up tweet, Cecchini also revealed that Tom Cavanagh will take on yet another new role next season. Since the show began, the actor has played a variety of different characters. As well as the original incarnation of Eobard Thawne (a.k.a The Reverse Flash), who debuted in season 1 and made his return in season 5, Cavanaugh has portrayed disparate and parallel versions of Harrison Wells. For the upcoming Crisis on Infinite Earths crossover, however, it was confirmed that he will be playing the Arrowverse's version of Pariah.

In the comics, Pariah (otherwise known as Kell Mossa) is a scientist. Their unorthodox experiments are what largely leads to The Anti-Monitor discovering Pariah's version of Earth and ultimately destroying it. Surviving thanks to The Monitor, who serves as The Anti-Monitor's direct polar opposite, he is left with tremendous guilt regarding his part on unleashing the cosmic threat on the multiverse. Both The Monitor and The Anti-Monitor will be played by LaMonica Garrett. It isn't made clear whether the character will be retconned into being another, alternate version of Harrison Wells, but Cavanagh has more than proven himself up to any challenge the Arrowverse writers have thrown at him. Equally, it's not revealed which antagonist Wallace is hinting at - though the comics villain Bloodwork is confirmed for season 6.

Equally, Lonsdale has always been popular with the cast, crew, and fans of The Flash. Star Grant Gustin even previously lamented the lack of true adventures their characters had shared, feeling that there was a lot more untapped potential there. The showrunners clearly felt the same, never fully closing the door on the character and welcoming him back at every arising opportunity. With Arrow concluding with season 8 and Crisis on Infinite Earths set to alter the Arrowverse on fundamental levels, fans are already rejoicing the opportunity to see the familiar face of Lonsdale's Wally West back in the mix, albeit briefly.

More: What to Expect From The Flash Season 6

The Flash season 6 premieres Tuesday, October 8 on The CW.

Source: Mike Cecchini