follower

US /ˈfɑː.loʊ.ɚ/
UK /ˈfɑː.loʊ.ɚ/
"follower" picture
1.

a person who supports and admires a particular person, group, or set of ideas

:
She has a large number of followers on social media.
He is a devoted follower of the new philosophy.
2.

a person or animal that follows another

:
The dog was a loyal follower, always by his owner's side.
The smaller boat was a slow follower of the large ship.