Theming is a specific type of painting for theme parks and environments. Hellmann has worked on the "Inside Out" parade float for Disneyland with Rando Productions, the "Cars" Parade float for Disneyland Tokyo with Rando Productions, California Disneyland's "Jungle Cruise," scale models for "The Little Mermaid" Disneyland Tokyo with Tom Talmon Studios, and Universal Los Angeles' "Harry Potter Wizarding World with KHS&S."