How about a guy that gets muscular by making his unwitting victims lie ontop of him and then he absorbs their muscles into his?
The huge dude then becomes the unwitting plaything for the muscle vampire...
Addendum by archiver: This page was originally part of musclegrowth.org and exists as part of an overall archive under Fair Use. It was created on April 16 for the purpose of preserving the original site exactly as rendered. Minor changes have been made to facilitate offline use; no content has been altered. All authors retain copyright of their works. The archive or pages within may not be used for commercial purposes.