Mo has always been so protective of his sister throughout the series, that even J.C. fears he will break his morals and kick his ass if he dares insult her.
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Mo has always been so protective of his sister throughout the series, that even J.C. fears he will break his morals and kick his ass if he dares insult her.
Context for the AU
Text version:

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Protective Siblings
I really love how protective the siblings can be of each other (specifically Mo over Sam, but Sam has her moments of protecting big bro as well). Here is one of those that always brings a smile to my face!
Episode 1A - All the Right Grooves
When J.C. is being a jerk to Sam, pointing out that he has brought guacamole because a bowl of it fell on her head the last time she tried to dance, Mo gets very angry, almost cursing him out before his sister stops him.
But the moment he touches their sibling relationship, even Sam isn't holding back, ready to throw some hands and kick some butts.
These two care about each other immensely, and won't let anyone talk badly about the other, which is so wonderful to see. Their sibling relationship is strong and is such a highlight of this show!
Here is another adorable instance of Mo being protective of his little sister, as he so often is.
Episode 12A - Frankensam
When J.C. catches Sam confessing that she doesn't want her old dolls destroyed, and is about to show this evidence to Amber so she can remove Sam from the eco-officer position, Mo snatches his phone away, threatening to drop it unless he leaves her alone.
Later on, he still managed to get back at J.C. for trying to mess with his sister. J.C. did nothing to him in this episode, so this was purely for Sam's sake.
He cares about her so much and it's super adorable to see!