Gerald Johannson is the best friend of Arnold on Hey Arnold. He is an African American boy with black beehive style hair and he wears a red shirt with the number 33 on it and blue pants with shoes. He is voiced by Jamil Walker Smith. He is the voice of reason sometimes if Arnold has problems and he is also Phoebe's love interest on the show. He alwasy stands up for Arnold no matter what the deal is.
Gerald is Arnold's best friend — which usually means he's on the scene when Arnold's latest escapade happens. Gerald is also the occasional voice of reason (just when Arnold needs it). Gerald has a good deal of knowledge of many legendary stories in the city, or "urban legends" as he calls them ("Stoop Kid" was the first he told, while "Ghost Bride" was the last). He apparently gets these myths from a source he has nicknamed "Fuzzy Slippers", mentioned in many episodes as his reliable assistant. Until Arnold taught him, Gerald did not even know how to ride a bicycle ("Gerald's Secret"). In the episode ("Ransom") Gerald is seen riding his bicycle before episode ("Gerald's Secret"). Gerald's catchphrases usually were "Are you thinking what I'm thinking?", "You're a bold kid". But Gerald's interest in urban legends gave him a fright in one episode ("Four-Eyed Jack") after Gerald said there's no such thing as ghosts, but at the end of the episode while Gerald is asleep, the ghost awakens him and says a simple "boo" before Gerald screams loudly. The ghost disappeared afterwards.
At school, Gerald is the class president ("Cool Party", "Mr. Green Runs"), and considers himself very cool, and apparently, so do his friends. When it was revealed that Arnold was on Rhonda's so-called "Cool List", and that Gerald was on her other list known as "The Geek List" (due to a grudge Rhonda had against him over running for class president), many classmates were surprised to find this out ("Cool Party"). He seems to know a great deal of children's street culture.
Gerald may be beginning to notice that Phoebe is paying more and more attention to him — and the feeling could be mutual, although Gerald does accept a date to a dance from an older girl in "6th Grade Girls". (There weren't any "Gerald and Phoebe" scenes in any of the second season episodes, but Phoebe has "that look" after Gerald's solo in "Gerald's Tonsils", and they're together throughout Rhonda's party in "Hey Harold!".)
Gerald's last name is spelled "Johanson" in the first season and "Johanssen" in the second season, although it's spelled "Johannsen" in the credits for "The High Life" and "Johansson" in the credits of the "Urban Adventures" tape; since Gerald signs it "Johanssen" in "The High Life", that's the spelling used here.
Gerald's most distinct features are his hi-top fade (classmate Helga often calls him "Tall Hair Boy"), and his shirt with the number 33 on it (he also wears 33 on sports uniforms, a reference to Scottie Pippen).
- His relationship with Phoebe is simular to Seaweed and Penny from Hairspray
- His hairstyle is based on Marge Simpson of the Simpsons
- In the episode "Gerald's Tonsils" Gerald is a soloist of chorus, and in the episode "Arnold's Tonsils" he's briefly seen playing violin.
- His voice actor had puberty, so, to keep him on teh show, they explained that Gerald had his tonsils removed in "Gerald's Tonsils"
- We don't know if he'll return after Shooting Stars.
- MCF: Shooting Stars(Debut)