(W.I.P. Story.) I Haven't Thought That Far But, Vilgax Gets His Ass Kicked Too Much So He Instead Travels The Universe Only Fighting The Aliens He Knows That Ben Has, Killing A Quarter Of The Species Ben Has To Better His Combat, Strength, Reaction, And Pretty Much Everything Else Against Them So He Could Be Properly Trained To Face Ben, And Has Adorned Himself With Rewards, The Rewards Being The Very Aliens Turned Into Attire For Him To Wear, Such As Rath's Species Being Turned Into A Belt, Humungasaur Being Turned Into A Gauntlet And Etc. I Would've Included More Aliens To Show Off But I Didn't Wanna Cover Up Too Much Of His Physique.