Board Thread:The Flash discussions/@comment-28109177-20180214050341/@comment-28904959-20180220005734

Mallus may just be an alias name for a character we already know. Think about it, how else can Mallus know Sara and I did research and there's no one with the name "MALLUS" in the comics unless you consider the one who exists in the Marvel Universe. And DC Legends Of Tommorrow has a habit of reusing villains who were the main villains of other shows so Savitar is not completely off the table but I personally think it could be Vandal Savage.