His family is one of three in Sunset Valley to have a special plant in their garden in the beginning of the game. The other owners are the Langerak and the Wainwright families. This may be because he works as a fertilizer analyst, allowing him to receive the special plant seeds from his career.
He is the only playable Sunset Valley Sim who has the Never Nude trait; Skip Javeed, an NPC, also has the trait. In The Sims 4, there is a book written by him, called "Bangers are the Wurst".
Gobias Koffi's name is a reference to the actor David Cross' character, Tobias, on the FOX/Netflix show Arrested Development. In season 1 of the series, Tobias and his brother-in-law, Gob., decide to start a business, and come up with the name "Gobias... as in 'go buy us a cup of coffee'", hence Gobias Koffi. Tobias's homosexual tendencies and verbal double-entendres cause his sexuality to be called into question throughout the series. Gobias' sexual orientation is unknown. Gobias also shares Tobias' Never-Nude trait (a term coined by the show's writers to describe Tobias's fear of nudity) and he bears a physical resemblance to David Cross, the actor who portrays Tobias in the series.
It is implied that Gobias is homosexual. However, if he is not played and story progression is left on, he will usually be married to a woman and have children.