Did Invincible kills Thragg?

Invincible attempts to hurt Thragg but to no avail. He punches Invincible’s temples until he is saved by Nolan Grayson. Thragg reveals to Nolan that Thaedus had killed Lord Argall with Nolan revealing that the Viltrumites deserve extinction for their crimes.

Is Thragg stronger than Omni-Man?

After his fight with multiple Viltrumites at once it seemed like nobody could compete with Omni-Man’s power until Thragg established himself as the real big bad of the series. Serving the ruling regent of the Viltrumite Empire Thragg earned his top spot by being the fastest, the strongest, and the deadliest.