Board Thread:Supergirl discussions/@comment-9346948-20170523001131/@comment-29493700-20170615211209

Kaestal wrote: That was still the heroic Barry Allen up until the point he became a time remnant. Same life, same experiences, same motivations and convictions.

So saying someone's "heroic nature" is what stops them from being used as a villain later on is silly, since that is exactly what the show did. But you're still wrong. What the S3 finale showed us is that Barry could never become Savitar. Even when Savitar was on his last knees, pratically begging Barry to kill him so that Barry could tread a dark road, Barry could not bring himeself to do it.

He did not give into the darkness and power, because of that heroic nature. That was the whole point of Savitar being erased from the face of time.