H'el:

http://vignette2.wikia.nocookie.net/marveldatabase/images/1/1c/Avengers_Assemble_Vol_2_3_Variant_Textless.jpg/revision/latest?cb=20120510211930

vs.

Thanos:

http://vignette4.wikia.nocookie.net/superman/images/8/81/H%27El.png/revision/latest?cb=20130319021424

1st round: Standard Thanos vs. H'el from H'el on Earth.
2nd round: Standard Thanos vs. H'el from Kryton Returns.

Who wins both scenarios?