Board Thread:General Discussion/@comment-27855772-20160316194231/@comment-26907577-20190718141219

Oofoofoofoofoofoofoofoof wrote: I am Eddsworld Crazy wrote: Gaster Blasters are Sans' attack and Sans' attack ONLY >:C Alphys can also use them, and possibly even Undyne (there are 2 others she could have learned them from!) I don't think there's any way Toriel or Asgore know about them though. The Alphys NEO fight is not canon. The attacks Alphys uses as a Lost Soul are repeats of Mettaton's.