A major cast member from The Flash will be appearing in the series finale of Superman & Lois.
No, it’s not Grant Gustin, sadly… the actor in question is Tom Cavanagh, the actor who brought us infinite Wells variants. Cavanagh revealed this recently at a convention, where he talked about how he usually enjoyed directing season finales for the show, but was unable to in this case because Gregory Smith had already signed on to direct the Superman & Lois finale.
Superman & Lois showrunner Todd Helbing, who had also worked with Cavanagh before on The Flash and recruited him to direct the series’ 100th episode among others, instead suggested he has a role in the finale.
No word yet on what that role might be. As Superman & Lois is at a different spot in the multiverse, it doesn’t necessarily even have to be a version of Harrison Wells or Eobard Thawne. It could serve as a good closer, though, to the Arrowverse in general, as Superman & Lois is the last gasp for that world on The CW. In any event, you can see video of Cavanagh speaking about this (and more) at our Superman & Lois portal, KryptonSite.
The final season of Superman & Lois premieres this Fall on The CW.