Sometimes it's rather distracting how Kenny doesn't look anything like his parents or siblings. Yeah it's a TV show, but it's still a minor nitpick I have with this show. I mean Jimmy and Shannon actually look related, while Kenny looks more Mediterranean than Irish. Nonetheless I love the show and look forward to it every Tuesday.
Reminds me of Humans, where two red haired parents have two dark haired children. On the other hand I think his character traits resemble those of his mother in some ways, just like his brother is a lot like his father, so it fits well enough that I can live with it.
Everybody Loves Raymond bugged me. I didn't think Marie and Frank looked like the parents of Ray and Robert. Also Ray and Debra both were dark haired and yet they had three blonde children.
But I know it happens sometimes. My niece has blonde hair and her husband brown hair. Both their kids are redheads.