In an interview with Digital Spy, Loki head writer Michael Waldron teased to "expect the unexpected" when it came to surprise MCU cameos in Tom Hiddleston's series. Michael stated that no comic book characters were off-limits to him and his team either. "If they were within the rights, and legal could clear it, there was no reason we couldn't try and chase them down," Waldron revealed. Although Loki director Kate Herron disclosed that there will be nods to the comics, she also stated that Loki Laufeyson's journey in the series is something we've "not seen or read before."
Michael further disclosed that Loki writers' room was fortunate enough to watch Avengers: Endgame's early cut, after which they suddenly realised that "we're making Loki in this era after that." On what comes next, Waldron shared, "To me, that was exciting – this unchartered territory of 'where does the MCU go?' It felt like, more than ever, that sandbox – we could blow the lid on it, and go wherever we wanted to."