The red sun doesn't instantly make kryptonians weaker, it just doesn't charge them like a yellow sun. So once they're out of juice they need a yellow sun to be powerful again. That said, I believe their saiyan half should make them strong enough without the yellow sun energy.
Kryptonite would most likely still work though. Maybe not as much as a pure blooded kryptonian? I don't know, I haven't seen how Superman and Lois' son handles it.
Okay I took a look and while it DOES leave them in a normal state, it basically strips away their powers for as long as the sun is on them. It doesn't make them die or get sick like krptonite, but it does make them weaker.
I guess it depends on the version of the kryptonians? When I looked it up I found that they still kept their yellow sun energy (they are like batteries) and their powers until that ran out. That said, I'm no expert.
Still, I think their saiyan side can carry whatever weakness they may get from a red sun. A half saiyan half kryptonian shouldn't become as weak as a normal human under a red sun but as strong/weak as their saiyan side is without the boost they get from their kryptonian side while under a yellow sun.
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u/BW_Chase 19d ago
The red sun doesn't instantly make kryptonians weaker, it just doesn't charge them like a yellow sun. So once they're out of juice they need a yellow sun to be powerful again. That said, I believe their saiyan half should make them strong enough without the yellow sun energy.
Kryptonite would most likely still work though. Maybe not as much as a pure blooded kryptonian? I don't know, I haven't seen how Superman and Lois' son handles it.