Opinion regarding Gus Grav and Premo Vulcan?

What you guys think about these characters?

Personally I really enjoyed Gus's journey, from a minor antagonist to becoming good after the end of New Vestroia. He starts as a capable rival to the Protagonist Dan and later gets overshadowed by Spectra in the power department.

I also got crazy hype from when Gus had the audacity to invade Zenoheld's palace and threaten the Emperor himself challenging him to a battle. Gus's loyalty to Spectra has no limits, same goes for Vulcan towards Gus.