In the episode The Pecking order Coop absorved all NightMasters energy but gained control ever it but whenever someone makes him angry he becoms evil.When Yin saw him in the evil form she started drulling.Yo told her to date him to calm him down until he finds a bowtie.In the mall people laughed at Yin and Coop and he became angry and truned Yin a little evil but she called him 'Sugerbee' and that calmed him down.Unfortunetly he and Yin got insulted again and made some people evil.Yin really liked the bad Coop but was to nice to let anyone get hurt so he turned her evil.Yang followed them and Coop caught him and he truned Yin really evil.Yin and Coop went to the gatekeeper to become the new NightMaster but Yang,Lina and Yo stopped them.
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