Board Thread:General Discussion/@comment-27524978-20160210030742/@comment-11139677-20160726204900

Oobooglunk wrote: H.N. H.N. Elly wrote:

if it stands like Ness, has a badge and a glowing eye like Ness, wears shorts like Ness, and teleports like Ness, then it probably is Ness. That's kinda cherrypicky, isn't it.

Better?
 * Sans can disappear through "shortcuts" and has knowledge of time travel and alternate timelines
 * Sans has a badge, which has no reason to exist in Undertale but plays a major role in EarthBound
 * Courage in EarthBound is similar in its properties and name to Determination in Undertale
 * Undertale's surface world is similar to the world of Earthbound in appearance and geography
 * Sans' stance and clothing resemble Ness'
 * Sans bleeds, breathes, and sweats
 * Ness is not present in the Earthbound Halloween Hack, being stuck in an unseen alternate timeline (Undertale)
 * Sans' attacks in the Genocide Run "drain" damage, the way it was "drained" in Earthbound
 * The time travel and timelines refers to the resets plotline in undertale, not anything in Earthbound


 * The badge is likely referring to the implication he worked with Alphys at some point (look at her neutral ending) with it representing some sort of research team


 * His clothes do not resemble ness


 * It was impied that game's protagonist, Varik, was simply an alter ego of Ness, as evidenced by the game over screen and several other things


 * That's because of the karmic retribution thing, something never brought up in earthbound

So much grasping for straws, this theory.