Yes, I'm another one of those guys that autistically tries (too) hard to invent nicknames for my mons. But I think, sometimes, I really strike gold, and I get some results that might not be so cringeworthy. For instance, I just caught a Hawlucha in Y. The last playthrough I had one, I just put "bird of prey" into Spanish. Not the best, in retrospect. But I decided to look up wrestling moves for this one. I found a list of 50 famous wrestling moves, and one of them was Adrian Neville's "Red Arrow." Well, for one, red is one of Hawlucha's primary colors in its design. But this is what I found really fucking cool: the Red Arrow is a press move, like Flying Press, except it involves an aerial twist. Here's a slow-mo video of the move being performed: https://www.youtube.com/watch?v=qpchfT2nm0M

In short, post nicknames you came up with that might actually be cool.