So in deltarune we see alvin he fully a grow man and monster being. But in undertale we didn't see him? Why? So hear me out In undertale 10th anniversary, it's confirm that gerson (aka alvin dad) had a relationship with a human so the war between human and monster era the human that gerson had relationship with might abortion him because alvin might not suvive the human world after human is the one who win the war and gerson might know about this but he didn't talk about it Am I right lad or am I right lad ?   submitted by   /u/ThinkAd3640   to   r/Deltarune [link]   [comments]