There was an orange Hulk unlockable in Marvel Vs. Capcom. I can't wait for him to show up in comics!

Hulk/GL crossover. Hulk gets a red power ring, wrecks shop, and GL has to stop him.

Get to it, DC!

HULK BRIGHTEST ONE THERE IS!



On a more serious note, the Red could probably be attributed to the fact that Cosmic energy was used when turning them into Hulks.

Major spoilers below for the following comic storylines: World War Hulk, Fall of the Hulks/World War Hulks





It is revealed that at the end of World War Hulk, when Tony Stark shoots a beam from a satellite at Hulk, the satellite had been hijacked by the Leader and MODOK to sap Gamma radiation/energy from Hulk and redirect it to them. They used that energy, combined it with Cosmic energy and shot it at Thunderbolt Ross. They also did it to Betty Ross-Banner to cure her from the cancer she had. It was assumed she was dead in the past, but the issue that revealed Red She-Hulk to be Betty showed that Thunderbolt Ross had kept her in suspended animation and enlisted the help of The Leader and MODOK to save her.

But wait, there's more!

Bruce Banner - Hulk
Jen Walters, Bruce's cousin - She-Hulk
Betty Ross, Bruce's wife - Red She-Hulk
Thunderbolt Ross, Bruce's father-in-law - Red Hulk
Lyra, Bruce's test tube baby birthed by Thundra - Savage She-Hulk
Skaar, Bruce's son from planet Sakaar - Skaar
Hiro-Kala, Bruce's other son from planet Sakaar - Hiro-Kala


Bruce has a cousin, a wife, an in-law, and 3 kids. All of them are hulks, though technically Hiro-Kala has not transformed into a Hulk from what I know. He does seem to have a power fueled by rage though.

This doesn't even get into Rick Jones (Bruce's best friend), who is A-Bomb and Rick's wife who is a harpy.