I am humbled by the Rival's inclusion here. Seeing him be included with so many cool artists' own OCs is a surreal feeling, but in a good way! I love how you drew him too. Took a design I initially wasn't that fond of and made it into something great.
Obviously, I am biased towards him, but there's so many cool characters here that it's hard to choose. That mysterious viking looks so badass and only one eye being visible creates major intrigue.
Aiko Starrah takes many of the design tropes I'm obviously fond of (eye scar, cool t-shirt, overall alternative aesthetic) and mashes them into one really eye catching and super cute design.
Sheep the Robot is simply iconic, not much more needs to be said there.
I could go on, but I don't want to ramble too long. All of them are cool characters that look quite nice in your art style. As for whether you should do something like this for the third time, if it means seeing another one of my OCs in your art style then ABSOLUTELY.
Just kidding lmao. Unless? Being serious here, I like seeing how you draw others' OCs, whether they're my own or not, so I'd be down to see you do this again (again).