Kai- honestly, will swear for absolutely any reason whatsoever. Most of the time he's just telling Jay to f*ck off.

Jay- doesn't swear too often. Most of the time, he just swears when he is jump scared.

Cole- occasionally says 'oh sh*t' when everything is s going wrong on a mission.

Pixal- it takes a lot to push her to swear. When the mechanic kidnapped Zane, she grabbed him by the collar and said, 'okay you piece of sh*t!! Where is Zane?'

Nya- like Kai, she swears ALL the time. Will sometimes just start swearing for absolutely I reason.

Zane- has never been caught swearing. Doesn't say the F or S word but did call the mechanic a d*ck once.

Lloyd- is incapable of swearing.

Wu- once he was dared to swear and he did it. All of the ninja were like le gasp