How can i get people to stop being afraid of me?

okay all my friends and others are afraid to get hurt by me, and they are afraid to get on my bad side. they keep asking me to beet someone up for them and be their bodyguard. they know im in 14 different martial arts and a master i six of them, and a black belt in seven more (karate im only an orange). i keep telling them im a pacifist but it don't help im only 5"2' and have a vary Innocent personality. im wondering if anyone can help im losing friends, so please answer. no one has ever seen me in a different mood then happy and i want to keep it that way, i beg for help... please :(