![](https://pic1.mangapicgallery.com/r/avatar/2e/u571391_50x50.jpg?2)
Yes he is. Sid is basically "mole"who works for Satan if I remember correctly based off of the comments below and he basically responsible for Cain (hope I got his name right the first couple seme) not being able to use his powers at 100%.
(⊙…⊙ )
I am not gonna spoil too much more but the Doctor demon is also the lover for the second couple. ε=ε=(ノ≧∇≦)ノ ヾ(❀╹◡╹)ノ~
![](https://pic1.mangapicgallery.com/r/avatar/2e/u571391_50x50.jpg?2)
Since people are providing spoilers for me I will add another and that is in the latest raws the doctor is the uke and Jin is the seme! ε=ε=(ノ≧∇≦)ノ
And yes I love them as the couple more than with Sid xJin for one thing by comparison Jin and the Doctor their chemistry is soooo MUCH better not to mention their interactions ate really sweet and adorable to watch ! ヾ(❀╹◡╹)ノ~ ╮( ̄▽ ̄)╭
wait is the doctor really trying to help?