This occurred to me this morning as I was reading some of the DC Rebirth titles. Kara grew up on Krypton speaking Kryptonian, yet when we hear her speak English on TV or in movies she speaks English with an American accent. So do many other Kryptonians we've seen in live action depictions. Aside from Superman, who grew up on Earth, wouldn't all Kryptonians have some kind of accent when they spoke English?