Yoongi: he doesn't stalk anyone, he is obviously too swag for that *coughs* on a serious note, let's all be honest here, he's asleep and that's why he doesn't stalk.

NamJoon: any girl with red high-topped converses.

Hoseok: if you have a horse, you might as well look around, because Jhoe may be near....or right behind you...or on your horse already... oh look he's already riding it away. Bye bye horsy.
Don't tell me bye bye

Jin: if you live in a tower and/or have a dragon near, Jin might be stalking you. Not because he admires you or that he's obsessed with your life style, but he would definitely try to steal your place every once in a while.

Jimin: jams, 'nough said.

Taehyung: there's not mamy people he can stalk on outerspace, so it's probably either aliens or cats.

JungKook: G-dragon.