This is the earliest drawing I have of this concept. 'Cat' would've looked more like the statue in the rides queue, but bcs the coaster itself is still green/purple I changed her colors to match.
Fun Fact! Originally, I planed to have Timmy dressed up as Puss & Shredder as Kitty Softpaws. This was changed to better reflect their personalities, as seen above.
Disclaimer- I used Photoshop Express' "heal" feature to remove some noticeable pencil marks from the drawing. Outside of that, the drawing is unchanged.