Avengers: A Devourer Beast from the Start

After an accident, Du Ao finds himself in the Marvel Universe. The Time Variance Authority is after him as soon as he transmigrates? Then don't blame me for messing up the timelines you care so much about... Since I'm an invader anyway, why not cause a little trouble? Would it really be so wrong to save Iron Man's parents and ask him for a suit of armor? Save Thor's mother? Tell Loki that his girlfriend is actually himself?