another headcanon
the scary deep demon voice is one of the freebie powers a lich gets. barry and lup used to do it all the time back on the starblaster for jokes and it was hilarious to everyone
taako: haha, lup, do the thing,
lup: *bats her eyelashes, looks as cute as possible, and says in a loud, horrifying, otherworldly voice* Ḥ̛͈̟̠̮E͖̣̖̯͖͉̠W͝W̩͎̩Ǫ͖̼̥̰̲̙̳!̝̞̗̲ ̝̫̱̭͉T̲̝́Ḙ̭̟E̺ ͍͚̺̦̳H̟̳̝̮̱͉ḚE͍̪͇̺̙͙ͅ ͈͕̺͚͖͈͉♥̸̱͍̙͕ ̺♥͏̞̟͙͚̻ͅ ͇͍̦̞ͅ♥̺̰̱̝̞̼̯ ̤̺̘