It is, indeed. :3
It's called Zoids Legacy, and it's an RPG for the GBA. :D
You can have up to 6 Zoids in your party at a time, depending on size (If you have an Extra Large Zoid in one of the rows, you can only put it in the middle slot and the other 2 in that row will have to be Small size).
I must warn you, however, the translation is insanely bad. It's hard to believe it's the official translation. :x
EDIT: Oh, and if you play it and care about stats and stuff (minor plot spoiler that affects stats and stuff)
You get an Organoid not too far into the game, but it levels up alongside you. The only problem is, if you level before you get it; it doesn't take into account the levels you've gained when you first get it.
So it's best to avoid all battles except the story ones until you get it so your levels are closer together. :x