image/Copy
    New(mob/m)
        loc = 1,1,m.z
        pixel_x = m.px  //Considering that your using Forum_Account's lib
        pixel_y = m.py  // These are Sidescroller lib vars
        spawn() Fade(m)
        for(var/mob/mb in m.view(10)) // The ten in view() should be slightly larger 
            mb << src                       // than the amount of tiles the player can see.
        ..()
        
    proc/Fade(mob/m)
        var/icon/ico = m.icon
        icon = ico
        icon_state = m.icon_state
        for(var/n=0, n<4, n++)
            icon += rgb(0,0,0,n)
            sleep(2) //or however long you want, the lower the number, the quicker it fades
        del src