Easter-Eggs and Crazy Cross-over Conjecture!

[TheRedStranger]

 This is the thread where you can hunt and speculate on the slightest hint of a reference from one piece of media to another and patch an elaborate tapestry of a hypothetical multiverse. Think Undertale and Earthbound are in the same universe (and that Sans is secretly Ness)? Wish to pontificate the Tommy Westfall multiverse? Here is the place!

[Addendum: For the sake of clarity please call realities that are byproducts of the multi-verse hypothesis or alternative-times lines "Alternative universes"  or "Alternative timelines." In this context "multiverse" stands for a web of limited interconnected universes that are distinct from each other and have not diverged from each other like the in the aforementioned hypothesis.]