Complex sentence: The male form is stocky and troll-like in appearance, with red or brown skin; but otherwise roughly human-like in size and shape, though this is likely to be just different artists'rendition of the' transitional' form.
Split into simpler sentences: The male form is stocky and troll-like in appearance, with red or brown skin; but otherwise roughly human-like in size and shape. Though this is likely to be just different artists'rendition of the' transitional' form.