There shouldn't be any "gay characters" in a children's show. There should not be any characters with any apparent sexuality period. Children do not need to be exposed to sexuality at all, let alone the more controversial issues of homosexuality and all its implications.
Kids shows should be fun, entertaining and/or educational, stimulating or include simple moral lessons. Any show which had any suggestions of sexuality would not be suitable for children full stop and I certainly wouldn't allow any kids of mine (had I any) to watch them.
Once children reach adolescence, it's a different story. Then it's perfectly acceptable to start getting in issues that are of import to teens and pubescents such as peer pressure, bullying, sexuality (not graphic of course) and birth control/sexual health, self-image, individuality and rebelling against The Man.
Kids shows should be fun, entertaining and/or educational, stimulating or include simple moral lessons. Any show which had any suggestions of sexuality would not be suitable for children full stop and I certainly wouldn't allow any kids of mine (had I any) to watch them.
Once children reach adolescence, it's a different story. Then it's perfectly acceptable to start getting in issues that are of import to teens and pubescents such as peer pressure, bullying, sexuality (not graphic of course) and birth control/sexual health, self-image, individuality and rebelling against The Man.