The Living Tribunal was, for a long period of time, considered the highest power in the Marvel Universe. He presides over and judges the multiverse accordingly, with Stephen Strange's earlier tests as the Sorcerer Supreme actually involving him having to convince the entity that the Earth is worth serving, despite calls to the contrary.
He's a big deal, and has come to be one of the few constants within the cosmic vestiges of the Marvel Universe. His power levels are also off the charts, with the character having been considered the most powerful in the universe prior to the introduction of Marvel's own equivalent of God who, as the creator of the universe, is the oldest being in existence.
In any case, mainstream audiences should probably see the Living Tribunal at some point. The character was name-dropped by Mordo in Doctor Strange, and with the next phase heading down a distinctly more cosmic path than others, an appearance in either Doctor Strange 2 or a future Avengers shouldn't be ruled out just yet.
WhatCulture's very own resident movie guy, Ewan has been working in the content creation biz for over 10 years now, having started as a freelance contributor to WhatCulture Gaming all the way back in 2015. After graduating with a First-Class Honours in History from Northumbria University in 2017 (where he won a prize for a totally killer dissertation on the Watergate years), Ewan took on the role of Comics Editor at WhatCulture and quickly developed WhatCulture Comics into one of the biggest superhero-focused channels on YouTube. He followed this with a brief hiatus at Screen Rant in 2021, where he worked across the Gaming and Film sections as a writer and editor, before returning to WhatCulture as a Senior Content Producer / Presenter in 2023. He started his own podcast, We Love Dad Movies, in 2022, and has contributed several written pieces to the Eisner-nominated comics website Shelfdust as well.
In his current role, Ewan incorporates his love of cinema, comic books, and history into written pieces and video essays for WhatCulture's Film & TV channel, as well as WhatCulture Gaming and WhatCulture Horror, with a particular focus on nineties-era Dad Movies, old school Westerns, and Golden Age Hollywood Noir. John Carpenter is his fave, and he thinks Batman Beyond should never have been cancelled. If that's your vibe, you'll probably like his stuff.