I'd love to see Pliosaurus funkei aka Predator X. It's the larges Mosasuar ever discovered, so i thought it could act as the Giga of the ocean, being absolty massive, really strong, really rare, and stupidly difficult to tame. I know the Mosa is said to be the giga of the sea, but, lets face it, it is much closer to the power level of a rex. https://scitechdaily.com/predator-x-officially-named-pliosaurus-funkei/ https://en.wikipedia.org/wiki/Pliosaurus#Pliosaurus_funkei