A:Answer Hey Channy! Yep, it does come with an RGB Controller - and while you can upgrade any fans on our Player series PCs by DIYing it, it'd be important to note that we'll still require the PC on its original condition (i.e with its original parts, fans, etc.) if you were to claim warranty on the build.
Lastly, you're also correct that you'd need 2 RGB & Fan Controllers if you were to fill out every slot, including on the Kraken with RGB fans.
Hope this helps!