Crossover between Atom and Mars?

[Toshio]

So, how could be a crossover story between Atom and Mars?

Would be cool to present both as rivals having different creators?

For example, Dr. Tenma had created Atom and Dr. Yamanoue had created Mars.

I wonder how Atom's missions would work if he had to team up with Mars.

[Tetsuwan Penguin]

Somehow I have to think of Mars as Atom's little kid brother who is always getting in trouble (in different ways than Uran). Almost like Wally and the Beaver (Warning age showing!).