In this episode, he helps Mario do his work at the Circus, though it ends up badly for him. He then saves Mario from Waluigi, but after he accidentally shoots a baby doll at Donkey Kong, Bob ends up getting mauled.
Bob displays his selfishness by choosing to abandon Mario and Luigi to the horde of T-Pose Zombies, which eventually resulted in Luigi getting captured by the T-Pose Zombies. As retribution, Mario threw him off the roof and into the swarm of T-Pose Zombies.
Bob is a selfish, attention-hogging and sometimes cruel Garo who has a knack for swearing. He loves himself more than anyone and believes he is far more important in the world than anyone else. In fact, he made himself a really long fake autobiography where he kills SMG4 (who was apparently the book's main antagonist) and replaced him as the new main character. In both the same book and his Soundcloud account, he believes to be "the sexiest man in the world". This led to SMG4 calling him an "asshole". He also sometimes leaves his friends to die in certain situations despite their begging, which severely infuriated Mario.
Despite that though, Bob really did care for his friends aside from the Rapper Bob arc, considering the fact he hasn't seen anyone for 500 years and called Boopkins his best friend. However, at some point, he started seeing his friends as morons who only made his life "devastating", and used them to selfishly gain fame. Upon Boopkins accidentally ruining his concert, Bob angrily revealed that he never considered Boopkins nor anyone else his friend, and upon rebuilding his career, proceeded to humiliate them all on live TV.
However, after his career is ruined by his former friends, Bob tried and failed to make amends with them, until Waluigi made him realize that his friends were the most important thing to him. He eventually decided to stop being a selfish narcissist and became friends with Boopkins and the others again, supposedly.
As revealed in Mario's Challenge and basically every episode he appears in, he has a bad sense of humor that only annoys people, which led to Gobbles The Gargoyle crushing him. The only time people laugh at him is when he is in pain.
Holding Hostages: In Trick Or Treat Wars, Bob, fed up with not getting any candy, proceeded to grab a gun and held people hostage, threatening to kill them if they didn't give him any candy. This led to the police arresting him.
When Bob's stolen computer breaks, Luke Lerdwichagul makes a side comment, "At least I learned Russian." as Bob's persona, suggested that Bob learned Russian from playing Counter-Strike: Global Offense.
Bob is supposed to have originated as a trash bag that was accidentally put in a toxic waste field by Wario. However, this makes no sense unless Wario was taking out the garbage and that he had time traveled due to Bob being 502 years old or he can only be that older 507 years old for his own age.
Bob appears to be a replacement for SMG69. They both are fans of SMG4 and frequently ask him to be in his bloopers, yet SMG4 keeps refusing, although SMG69 only once appeared outside of videos involving blooper production. He appeared in SM64: Ssenmodnar 8 (150k Special), where SMG69 asks SMG4 to be in a video before SMG4 throws him into the sun, killing him off. It is possible that this is the reason Bob replaced him.
According to (fan-contributed) closed captions, Bob's speaking subtitles use alternate typesetting of uppercase and lowercase text that represents a mocking tone.
However, the viewer cannot see it, as it is only visible as a shadow. However, Mario and SMG4 are able to see it.
Bob is the only character that breaks the fourth wall by asking that if there will be SMG4: War Of The Fat Italians 2018, until SMG4 said "No, that's coming out later!", foreshadowing the eighth installment of the series.
In the same episode, it is revealed that Bob has the ability to teleport, and is omnipresent.
He is one of the few recurring characters who did not attend Glitchcon 2018.
In SMG4: Mario's Train Trip, he claims that he has a final form, but when pulling the lever to activate it, he just disconnects the train car at the back of the train so that he may have been lying.
However, SMG4: Mario and the Anime Challenge suggests that Bob may be more powerful than we think, as in the Goku Scream challenge, he becomes super saiyan, and during the final anime battle, Bob uses a Kame-hame-ha attack, which he states is only 2% of his power.
Starting with SMG4: War Of The Fat Italians 2018, Bob's eyes are now more expressive but they started having expressions back in SMG4: Mario University where in a picture, he had angry eyes.
In SMG4: Mario and the Bob Mansion..., it is revealed Bob refers Thanksgiving as "Bobsgiving" and Christmas as "Bobmas". This is apparent due to his selfish demeanor and in that instance, as a way to scam as well.
He is the second SMG4 character to get their own arc, the first being Waluigi.
Coincidentally, both of them were antagonists of their respective arcs.