Basically this takes place in a gijinka kirby au in which all machines can produce a semi holographic version of a humanoid self to interact with their rider. If the machine is damaged, their form will appear more glitched and corrupted. They often take on traits of their riders.
For the Warp Star (Its/They), it's a special case as it's always been with Kirby for awhile (for Warp Star, it was essentially like a protoype of the Air ride machines sent out by Nova as a test long before any of the gigantes stuff happened). So it took alot more traits of her then others as they've known each other longer.
For Turbo Star (He/She), He is a older model yet still younger then Warp Star. His rider is Starman, so they some traits from him but not all. I gave her a mix between a racing and superhero suit that would see in those power Rangers shows, as Starman kinda reminds me of them.
Slick Star's (She/It) rider is Gooey, so I kinda wanted it to look like him. So yeah, she is some goo creature. The hand tail isn't really usable though. I honestly don't have much to say on her compared to others later.
Formula Star's (He/Him) rider is Magalor (The Lor looks somewhat like the Formula star in my opinion). He is snarky and smart, knowing how to get his way. Think pre redemption Magalor. Formula Star is also somewhat suspicious of the signal he's getting (after all, what lies at his origin?), however the curiosity is too strong.
Non rendered/filter less versions below: