Oh, so tempted! I currently have Kolumi and Fanatical who are my best trained and who I use for battle. The rest of my pets also get a smattering of training but as of currently the only one I'm focusing on besides those two are Julios (and I just started with him so he's very low down on the stats).
I think I'd keep Laze as he is because that pose just really fits him, so I don't anticipate a species/color change anytime soon. Story-wise, I'd probably link him up with Fanatical. Born in the same facility, he was the sixth successful 'experiment,' and his self-proclaimed One True Love is food. Not the food bars they always get rationed. Real food. He will do practically anything for even the prospect of real food, which his elder pseudo-siblings understand and exploit accordingly by dangling the carrot in front of him yet never actually giving him the carrot. It's very frustrating. He has a higher metabolism than the others though so he burns through more rations than they do, which partially fuels his undying quest for tastier calories. If he's gotta consume more, he thinks that he should be able to have a better selection. Because of this, he's a highly unmotivated and consistently aggrieved individual who more often than not needs the Big Stick method in order to get him to do anything.
I'm really digging that idea so if you def want him I'll send him over :D