θεός της διάνοιας

Letting himself be weak and in that weakness doing stupid things. 

Both as Kael and as Koios he's afraid of becoming attached, so emotionally invested in somethings or someone, that due to that urological attachment he is unable to do what needs doing. This he see's as a weakness and to Koios especially weakness always comes with reproductions. For instance his mother's inability in dealing with their father herself, caused himself and his brothers, especially Cronus to take on the heavy task. Also it caused a riff between himself and Oceanus as he was the only brother who did not share the burden While his other brothers might respect and look to their oldest brother for guidance, Koios is unable to do so. 

After thinking about it (It was between Rocket Raccoon and well Tony Stark) Koios/Kaidan is a lot more like Rocket Reccoon!. 

Both practically genius that know how clever they are and like to mess with people for their own amusement and always have some kind of a comment. 

He looks after himself first and foremost but as both their relationships develop they show how much they care for their friends...

The scene where Rocket asks for Peter to get that man's prosthetic leg just because it would amuse him seeing the old man hop around, or when he asked for that guy's fake eye. Is something very much Koios would do, it's manipulative, selfish and it's kind of like how Koios he told Cronus that eating his children could be a solution to their problems. It was partially for his own amusement and both characters don't see how that could have actually hurt someone.

Rocket was made the way he is, he was taken a part and put back together time and time again to be like this. Koios was made to be how he is by his father.