N'orr Cott (Earth-Prime)

{{Character }} {{Quote|In fact, you remind me of a colleague I once had on Mars called N'orr Cott. We were a team. Every time I put criminals away, she would always stand guard in case of a surprise escape or an ambush. She had patience, courage and commitment, just like you. We called her Sentinel.|J'onn J'onzz to Alex Danvers|Rebirth (Supergirl)}} N'orr Cott, better known as Sentinel, was a member of the Martian Police and a former colleague of J'onn J'onzz.
 * name=N'orr Cott
 * image=Generic Placeholder 001.png
 * species=Green Martian
 * alterego=Sentinel
 * aliases=
 * status=Unknown {{c|presumed deceased)
 * occupation=Member of the Martian Police {{c|formerly)
 * affiliation=Martian Police {{c|formerly)
 * relatives=
 * universe=Earth-Prime
 * currentuniverse=
 * firstAppearance={{Ep|Rebirth (Supergirl)|m}}
 * lastAppearance={{Ep|Rebirth (Supergirl)|m}}
 * portrayal=
 * show=Supergirl

Martian Police
At some point, N'orr Cott became a member of the Martian Police where she was a colleague of J'onn J'onzz. She would always stand guard in case a prisoner escaped or ambushed them which earned her the name, Sentinel.

Legacy
In Mid-2020, J'onn told Alex Danvers about N'orr and suggested that she use her symbol as she was just as patient, courageous and committed as her. Alex agreed and J'onn placed her emblem on the panel in Tower.