Versatile Summon Monster will not work with say a hound archon or Legion Archon, correct?

[Malik Gyan Daumantas]

Asking just to make sure.

[Melkiador]

Correct. The creature has to normally have the celestial or fiendish template to be replaced by the versatile templates.

My favorite is adding aerial to aquatic creatures. Flying sharks. Sharknado.