Unity 2D>Playmaker>Character moves slowly up the Y axis without touching any keys

I'm having a weird issue where my character's sprite just slowly moves up on the Y axis whenever I start playing and I think it has something to do with the gravity because when I set his to 0 he doesn't move but he can't fall and if I set it to -1 he moves up very fast. If I set it to 1 which I thought was what I needed to do he just slowly starts moving up, anyone else have this issue? I've been following this tutorial btw,

Any help would be appreciated!