>>28496885Team Skull and Aether Foundation are both villainous teams running concurrently with different roles. Where Aether has good PR and Team Skull has bad PR, Aether uses Skull as a scapegoat for their own activities.
The Aether foundation is concerned with eugenics whereas Team Skull is concerned with simple theft. The crimes of Team Skull are also more petty than that of the Aether Foundation.
UB-01 (Lillie) is the first fusion of the genetic material of extra terrestrial with Pokemon/Human: the perfect culmination of all three species. Her relative UB-02 Beauty (Lusamine) plans to use Lillie as a template for the rest of the human race believing that a combination of alien/pokemon/human will bring harmony and peace to both the 'poor' humans and Pokemon whereas UB-02 Expansion (Gladion) is another Pokemon/Human/Extraterrestrial like Lillie who believes that humans are unredeemable and is a runaway experiment from Aether. Faba is the scientist behind the Aether Foundation's genetic manipulation and the Pokemon that Team Skull steal somehow end up in these experiments but Guzma and co do not know what Aether is up to.
Guzma's statement about being destruction in human form is merely dramatic irony because he's human whereas the Aether Foundation are explicitly not.
Guzma will wake Solgaleo and Lunala and try to steal them just in time for the Aether Foundation reveal and Skull will team up with the protagonists to bring the UB down before Solgaleo and Lunala seal the UB in their own dimension and Zygarde transforms to protect the Earth from the UB.