Question: what are all the ultra beasts?
Answer: Nihilego (codenamed UB-01 Symbiont)
Buzzwole (codenamed UB-02 Absorption) ... 
Pheromosa (codenamed UB-02 Beauty) ... 
Xurkitree (codenamed UB-03 Lighting)
Celesteela (codenamed UB-04 Blaster) ... 
Kartana (codenamed UB-04 Blade) ... 
Guzzlord (codenamed UB-05 Glutton)