Finally! After years of thick, bulky trolls, we finally made a skinny version more akin to the 5e version which has been tall and skinny since the original AD&D Monster Manual. He is still properly 'large' sized and has the long hanging knuckle-dragging posture. This is the same design as our regular brick-built-troll, but with some dark red parts substituted in various rotten places.
We use as much LEGO as possible but certain parts are not available in certain colors so this is a blend of LEGO and non-LEGO, since that was necessary. It took quite a bit of searching to track down the parts in the required colors, but we are happy with the result.