Why are The Forbidden Five suddenly became so dumb in Dragons Rising Season 3?

How did they (except Nokt since I have noticed that he wasn't trusting Thunderfang) were not expecting for Thunderfang to betray them and fight back? I honestly expected for The Forbidden Five to actually defeat Thunderfang and somehow gain more power from him as this would have built up of a lot of duels between The Upgraded Forbidden Five and The Ninjas. submitted by /u/New-Carrot4578 [link] [comments]