Tl;Dr things like whats portrayed in this comic happen all the time and it happened to me. I played D&D once as a child, I was a barbarian beserker named Ugg. Within 2 weeks of starting I had changed significantly, I was speaking in broken guttural English, I was eating nothing but roasted meat joints using only my hands and quaffing mead all the while being encouraged by the older and very charismatic DM. My family thought this was odd but were more amused than concerned as watching an 8 year old stumble around drunk while calling women wenches and claiming the cat was his battle stead was pretty fucking funny. What they didn't realise was that my surface behaviour hid a dark secret, by night I would take the ax from our garage and stalk the streets looking for strangers who I would proceed to chop up while screaming nonsense about vengeance to the orks who slaughtered my village. I had totally lost touch with reality and it seemed that Ugg had possessed my soul. I must have killed 60 people over the 3 months of my delusion/possession before I was found one night covered in blood laughing manically over the corpses of my 2 latest "orkish" victims by a travelling preacher. Luckily for me he understood what was happening and had seen my symptoms in 100's of children before me, with his help and many nights of solemn prayer to jesus christ I came back to God and not only stopped my nightly slaughter but also gave up playing D&D. It was a tough road but I made it and if I can I know anyone can. Im lucky I was found by the preacher and not the police, if you play D&D get help now while you still can and feel free to PM me if you need someone to talk to