John Doe is a fairly mysterious character, his true intentions always hidden behind a smile. He seems to be quite persistent, following You despite their disinterest.

He loves You.

He is quite energetic and talkative, along with being incredibly clingy. He also enjoys TV.

It is also noteworthy that he has a habit of repeating words to add emphasis. This is shown in both the 2nd and 4th endings where he repeats the word 'love' three times ("I just love, love, love you!"