Consistency is very important. If you are using dark outlines, keep them dark throughout everything. Take that pink hair, the outline is barely visible. Don't be afraid to use a much darker colour for outlines, even if it is nearly black sometimes (or actually black).
Some of your sprites have obvious dark outlines, others it is really hard to see in certain places. Shading consistency is also important...for instance that first dude in the lineup with the blue hat that A. has an awkward dark outline on said hat that is far darker than any other outline and B. has no shading on said hat despite the rest of the character showing shading in a way that means the hat needs some too.
It is always better to make your own characters by the way...I can see the pokemon trainer heads stuck on some other sprite's body. If you must do this, please update these additions so they are all from the same style, or at least look it.
Sorry if this sounds overly negative or harsh.
EDIT: minor minor nitpick but on that game logo I read "RPG" first.
Some of your sprites have obvious dark outlines, others it is really hard to see in certain places. Shading consistency is also important...for instance that first dude in the lineup with the blue hat that A. has an awkward dark outline on said hat that is far darker than any other outline and B. has no shading on said hat despite the rest of the character showing shading in a way that means the hat needs some too.
It is always better to make your own characters by the way...I can see the pokemon trainer heads stuck on some other sprite's body. If you must do this, please update these additions so they are all from the same style, or at least look it.
Sorry if this sounds overly negative or harsh.
EDIT: minor minor nitpick but on that game logo I read "RPG" first.