My friends and I would like to know!!! Please...?

So my friends and I were discussing our favorite little kids shows, and we remembered this one show with an alien boy on a huge spaceship (I know sounds crazy). It was on Disney channel and I think they were green aliens haha... We also remembered a show on nickelodeon with a girl who was nerdy looking, had braces and two red braids and her brother was a crazy little boy... If u could name these shows for us u would make some basketball players very happy haha thanks!!!