Here are 2 alien mechanics with an obvious contrast in size/height.

The one of the viewer's left is the girl here (https://www.weasyl.com/~bite20/submissions/2192951/working-on-the-ship-but-staring-at-something-else) of a currently unnamed species of alien and the one on the viewer's right is a Horos alien (https://www.weasyl.com/~bite20/submissions/2192956/horos-chart).

You can tell they're confident and gurly so to speak.

Here's a remake I had sonicfan546 do of this picture: https://www.furaffinity.net/view/39324464/