Custom Human Entity with skin and behavoir

I have experimented with other custom entities such as skeletons and zombies and I'm wondering how I would approach this. Is it possible? I've read into citizens source, but it seems too complicated for what I am trying to do. I do not need all possible control, just the ability to set pathfinders and variables such as lunge speed. Thanks in advance !

EDIT: I also need the ability to spawn them into the world. As of now, bukkit does not allow me to spawn entities of the type "PLAYER"