u/DarrNinjagoTheories

Unlike all the other Ninja Kai never got his own season. Lloyd had Sons Of Garmadon and Legacy of the Green Ninja, Jay had Prime Empire and Skybound, Zayne had Never Realm and Cole had Master Of The Mountain even though Kai did have a season which was Hands Of Time he shared it with his Younger sister who got her own season later on being Seabound.

So Ninjago This Is So Not Fair you ended the original series without giving Kai a season don't do my boy like that.

Arin Is the Only Ninja who cares abt his parents others don't. Some have reasons to not care like Frak cause we saw his dad and he was a total jerk, Wyldfyre cause she doesn't know her biological parents, Zayne bc his father is dead, Jay cuz he lost his memories and is slowly getting them back and Sora bc her parents are also jerks.

Other than that Idk why the Ninja dc like I mean we have Ray, Maya, Lou, Ed, Edna and Misako like hello don't y'all wanna know where ur parents are?

Lloyd is around 20 - 26 years old This is his mental age since he's physical appearence was sped up by the tomorrow's tea when he was a child.

Kai is 27 - 28 years old

Cole is 28 - 29 years old

Jay is 27 - 28 years old

Nya is 25 - 26 years old for she is 2 years younger than her brother Kai.

Zayne is over a 100 years old

This may come shocking to most fans of the Lego Ninjago series but even though Zane was built 40 years back in the original show he spent 60 years in the Never Realm due to Aspheera sending him back in time there This is wht caused his unusual age now

Arin is 15 - 16 years old

Sora, Frak & Wyldfyre are the same

I believe that It depends in which area

For example the most powerful Is Lloyd but when it comes to physical strength Cole is the strongest.

If it comes to who is stronger emotionally it would be Zayne bc he's a robot and he's the only member of the Ninja with no family outside Since he's creator/father Dr Julien Passed Away. If it comes to Mentally it wud be Cole as well Since he can be sensible even in the toughest situations

So really it depends on which area