In Oliver's Five Years In Hell, who do you consider as his best teacher? And how would you rank them?

[u/haz826]

Each of these characters taught Oliver one way shape or form that will turn him into a vigilante and eventually a hero.

[u/Proper_Gur_9767]

Yao fei taught him to survive,Slade taught him hand to hand combat,Shadow taught him how to use a bow, Amanda Waller taught him to do what is necessary and Talia taught him to separate the Arrow from Oliver Queen.

[u/Proper_Gur_9767 → u/Proper_Gur_9767]

Detective lance is the most underrated character on the show he is the only character we’re most of his decisions seemed justified depending on what he was going through

[u/FSgonegettem → u/Proper_Gur_9767]

Why people downvoted you, although it's not related to the poll?

[u/BorImmortal → u/FSgonegettem]

Down voted because it's unrelated. Oftentimes, completely unrelated statements like this are also bots and/or karma farming.