me, I don't know. these aren't my artwork. this is my final published version of my comic created by KP comics. I don't think they used vectors because they don't have that type of software. as a company they have to draw and create using there own software which isn't licensed by another company. Na my stealing days are over. I use to steal but whats the point now. I create amazing artwork by hand and then photoshop them if you have any doubts.