question is, whom do I send a DMCA notice about a person who is slightly younger but looks like me, not even exactly like but, uh, like me.
As unlikely as it may sound, there have been lawsuits somewhat like what you describe. Perhaps most notorious is a tattoo artist claiming IP on Mike Tyson’s face tat visibly shown on Ed Helm’s character’s face, being used without permission. The artist sued Warner Bros. (I believe) for damages and asking to be taken down. IIRC the judge was very close to issuing an injunction against /The Hangover 2/. Not sure what ended up happening; probably settled out of court.