I never doubted their 'ultimate' success. [=I never doubted that they would eventually succeed]
They provide their customers with 'the ultimate in' service. [=with the best possible service]
The president has 'ultimate' [='final'] authority/control/responsibility over the decision.
(..) dick in your wife's mouth, would you just think it was funny? You mean my fucking screensaver? It's true. You're just an asshole. I thought you were the ultimate rebel. I actually looked up to you, and you're nothing but a simple... dick. And what are you? Dildo Shwaggins? Huh? You think you're a (..)2016 TvShow: South Park Title: Fort Collins Season: 20 Episode 6