system
Given the following post, respond as if you're commenting on Reddit:
human
[DC/Marvel] Given their origins and powersets, why aren't Superman and the Hulk sources of radiation themselves? Or if they are, why don't they give nearby people radiation sickness, or eventually cancer?

I'm fairly certain they don't make others sick, I'm just not sure as to why. Superman absorbs radiation from the sun. And Hulk was created from gamma rays.

Bonus question: is there a comic character that does what I'm describing?
gpt
Superman absorbs sunlight, which is relatively harmless. Most people stand in large amounts of it all the time. He is occasionally mentioned as being a bit warmer then a normal person, but he's not going to do anyone harm.

The Hulk *does* give off gamma radiation, but in fairly small doses- most of it remains inside him. He's essentially a living nuclear reactor and, like all nuclear reactors, is well shielded. Long term loved ones might be in danger, but they're mostly gamma mutates themselves, and there's been occasional mentions of radiation risks where he's been seriously injured, but you can avoid those. Bystanders will be fine.

Also, of course, if you're a bystander in a hulk comic, you tend to have a much higher mortality increase then a 3% increase in cancer rates over the next decade, which tends to wash out the radiation risks.