It's Mysterious. There's something different about Nidorino. He isn't aggressive or super powerful, and he looks different too. Back in his high school/college years, the other (jealous) Nidorino would haze him often. He was, however, the object of several girls affections, even though Nidorino's a nervous guy and didn't like the attention.
What are the odds that a cute Nidorino and Nidorina couple could have ever met in the future?