A sycophant who flatters others to gain personal advantage, or an obsequious, servile lackey or minion.
toadlike
To behave like a toady (to someone).
A person usually of little talent who tries hard to succeed, especially through imitation, usually to gain fame or popularity.
A person who is perceived as putting too much effort into something recreational, such as a game.
To put perhaps too much effort into a recreational activity, typically a game.