Aside from playing Ted in Bill & Ted's Excellent Adventure
, take a look at this video
. He never ages.
If those two facts together don't scream "time lord," I don't know what does.
- So, wait, Keanu Reeves was Tutankhamun?
Hence explaining not only why he doesn't age but his emotional range.
Reeves was built by aliens
to infiltrate primitive human society, hence why he became Charlemange. However they didn't know much about human emotion, leading us with "woah" as a standard reaction.