News of Throg’s original role in “Loki” comes courtesy of Eric Martin, one of the show’s writers and producers. The day the episode premiered on Disney+, Martin shared to Twitter a thread of behind-the-scenes insight into “Loki” Episode 5. Among the new information Martin revealed was that Throg was once going to appear in the series’ pilot episode, weeks before his reveal in the Void.
According to Martin, Throg would have surfaced in the scene in which Loki is forced to watch a compilation reel of his interdimensional misdeeds, playing out in what the TVA calls its Time Theater. Martin revealed that the “Loki” team shot a scene in which Loki fought a losing battle against Throg. This was intended to be included in the Time Theater footage, but the scene was cut for its lack of relevance to the main story. “It’s too bad, because Tom was funny as hell,” Martin tweeted.
This isn’t the first time Throg has factored into a Marvel Cinematic Universe storyline. In “Thor: Ragnarok,” among a longer list of deeds for which he seeks atonement, Loki admits that he regrets transforming his adoptive brother Thor (Chris Hemsworth) into a frog. Throg, then, may not have appeared on screen prior, but is nevertheless a form once taken by none other than Chris Hemsworth’s Thor.
Since a version of Thor that remains a frog has now shown up in “Loki,” it appears that Loki has transformed Thor into frog form in multiple timelines, one of which could have once appeared in “Loki” Episode 1 were it not cut for time.