Cleveland is usually depicted as exceedingly gentle, patient, and sweet, and only on rare occasions he has been known to lose his temper and resort to violence. However, Cleveland gets visibly annoyed with racist behavior. He often acts as the voice of caution when other characters hatch harebrained schemes. Cleveland's speech is slow, almost elongated. Various flashbacks give conflicting histories of his speech patterns. In the episode "Death Lives" Peter Griffin met Cleveland in the 1970s and he (Cleveland) was skinnier (and obviously younger), sporting an Afro, but still spoke in the slow manner that he is known for. Likewise, in the premiere of his spin-off, it is revealed that Cleveland talked in a slow manner when he was in high school. In the fourth season episode "Blind Ambition", an out-of-continuity flashback depicts Cleveland as a fast-talking auctioneer when a totem pole falls over onto Cleveland's head, resulting in a slower state of speech.
One of the running gags throughout the series is that Peter's shenanigans frequently destroy the front wall of Cleveland's house, revealing him in thebathtub. He then exclaims: "What the hell?! No, no, no, no, no, NO!" as the upstairs floor tilts and the tub crashes to the ground. In the pilot of his spin-off, this gag was the last straw that convinced Cleveland to leave Quahog. However, even several states away, the Griffins' antics are still seen to cause this event, such as when debris from the missile that Brian, Stewie, Dan Aykroyd and Chevy Chase destroy happens to fall right on Cleveland's new house in the episode "Spies Reminiscent of Us" (Due to the unfamiliarity of the joke to the characters of The Cleveland Show, Cleveland's neighbor Tim the Bearappeared and said "I don't get it"). In "Brian's Got a Brand New Bag", Cleveland's old, and now unoccupied house is destroyed when Peter watches the movie Road House and beats up Brian, which results in a car crashing into the house, and the empty bathtub crashes to the ground. Afterward, Peter says "Oh, that's right. Cleveland moved." In the Cleveland Show episode "Gone With the Wind", the same running gag affects his former wife Loretta Brown, and she winds up dead after breaking her neck on the ground. In Something, Something, Dark Side, this gag is parodied when R2-D2 (played by Cleveland) slips off Luke's (Chris Griffin) X-Wing ship and falls into the swamp after they crash land on Dagobah.
Cleveland's bathtub accidents have been caused by Peter's giraffe stumbling backwards into his house, the flying missile as stated above, Peter and Loistrying to move their mentally retarded horse by driving into it, missing, and driving into his house, and other accidents.
Cleveland sometimes will show some sexual deviance or arousal towards attractive women. This is shown in the episode Petarded, when Peter brings 7 prostitutes into his house to get back custody of his kids and prove to child services that Cleveland is an unfit father. Cleveland responds, "Peter! You and 5 of those prostitutes get out!". In the Family Guy episode Love Blactually, it is suggested that he may have contracted genital warts, by having sex with a woman that Brian was previously involved with. He also claims to find power sexy and says that if he could date any woman other than his wife, it would be Margaret Thatcher. In an episode of The Cleveland Show he claims to have slept with six women.