Hong Bin once mentioned that there was once he asked Ravi to go and bathe after he finished bathing. After he finished wearing his clothes, he saw Ravi standing in the same position, he then asked why he hasn't gone to bathe which Ravi replied: "I've finished bathing.".
Hong Bin is Ravi's art work in VIXX TV while Ken is N's art work in VIXX TV.
Ken likes Chopper from One Piece. He fell in love with all the characters after a trip to Japan with VIXX.