Brain thinking of the Rejects multiverse AU where different ninjas from timelines they've been lost/rejected come together and work as timeline agents.
There's Storm, a Jay that was betrayed and framed for a crime he didn't commit, that lead to his death with ice in his heart and the wind catching his fall.
Mountie, a Cole that had his entire friendship blown to bits over the Perfect Match Machine, never recovered with Jay, and chose to fade away on Day of the Departed.
Rose, a Kai that did become the Green Ninja, but could not stop the Overlord Virus and lost everyone despite his attempts to stop it.
Bard, a Nya who kept her distance from the Ninja after her kidnapping, and came back to find Garmadon (and the Overlord) had won without Lloyd in the picture.
Juno, a Zane that was disregarded after his nindroid status was revealed and left to rust away in the Never Realm, only to grow cold and jaded after 600 years of wandering.
And L'oni, a Lloyd who's 16th birthday came with a horrific gift of inherenting his father's arms and fangs, which convinced his friends he's more monster than human...