Who said "I have transcended the limitations of mortality."?

This quote is attributed to Loki's Tesseract.

I have transcended the limitations of mortality. - Loki's Tesseract

"I have transcended the limitations of mortality."

Loki's Tesseract Death

"I am burdened with glorious purpose."

"Kneel before your king."

"Freedom is life's great illusion."

"I will never be your slave again."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."