Willis & Kilroy . . . peas in a pod.
Kilroy was active for almost two months. Willis was active over three years.
Interesting too, that with my phone I can see that Willis started an album titled "van sleepers" (empty), though with my laptop I can't see that info. One can leave a "visitor message" for Kilroy, but cannot for Willis. Willis is more careful in his stealth.
There are probably empty ghost profiles for Beetle Bailey, Goofy, and any other number of characters.
I believe willis to be a pseudonym for a regular E.O. member, allowing that member to view other's profiles incognito. I know because I viewed other members profile page under the screen name Lawrence and found that willis had already visited. Kinda like Kilroy.