Reply To: "What if …" – the Disney+ series … is kind of 'meh' ?

[odinsgrandsonParticipant 4288xp 0]

Where did the Marvel multiverse start?

The earliest I know of it is from the Captain Britain series by Alan Moore (which was largely about having to deal with problems that come from outside of your reality- very much akin to what they did in the final What If episode but without the team coming together stuff).

Even if it only exists to sell alternate comics, there are opportunities for storytelling that some writers take advantage of.