Ultimate Evolutions, or Uvos, are evolutions in a card’s evolutionary tree that do not require the card to be Max Level. An Awoken Evolution is a specific kind of Ultimate Evolution. If a monster has multiple uvos, the options are shown like below:
Unlike Normal or Reincarnation Evolution, an Ultimate Evolution is reversible, which allows a player to initially devolve and then re-evolve a certain card into a different form should they wish to take it down a different branch in its evolution tree. Devolution is done by using one of each color Lit as an evolution material and selecting the Ult. Devolution option when in the Ultimate Evolution Select screen, as shown below: