Stitch Sans fiddles with his needles. They're sharp, but they can't hurt him. Out of the corner if his eye he can see an Undynetale timeline getting destroyed by the Error Sans.

(Blurple514) "Thanks, Stitch. I am quite curious about you, timelines, and alternate universes. Though, if you were the first Sans, where did the Sans in the Undertale timeline come from?"

"Hmm..." Stitch Sans wraps some thread around his fingers, "well, I have a theory. I think that my timeline became the centre timeline, because my timeline definitely got corrupted without me and wouldn't go on."

He remembers the fuzz, Toriel, the timeline. It wouldn't have been able to go on with a big monster in the timeline vanishing. Something definitely happened after the whole ordeal happened.

Frisk, travelling, sprites, light.

Papyrus, Undyne, Alphys, smaller.

Space. Void. Glass. Holder.

(TrueSaiyan) "How'd you get there in the first place?

My guess would be data corruption at the end of the Ge--Oops,almost said too much.Try to only pay attention to the question."

Stitch Sans narrows his eyes suspiciously.

"Welp, I guess you could say I was the first Sans. From the start. The very first one. The one that - somehow - let other, greater beings know about the Universe. These beings...created more timelines. They...shall I say...guided all these other Frisks through life. Just as it should be."

His breathing turned ragged for a moment, left eye glowing a dark brown.

"Alas, whoever created me...our timeline...we weren't needed anymore. Our soul purpose was to let the other greater beings know our Universe existed." Stitch Sans paused, "or so we thought. Our timeline - something happened. Everything was flushed away, a wave of pixels that one would see on a broken device game."

He remembered the bright colours that made his eyes hurt.

Luckily he didn't have the guts to be sick. Heh.

"I don't know where everyone else went. Just that I went here."

Stitch Sans looked out, across the Undynetale timelines.

"I only knew that I had a purpose now."