Now, here are some headcanons for Bob and Bosip, as well as the other members of their gang.
1. Bob, Bosip, Bobal, Bofo, Bowaev, Bobot, and Boder all originated from Amor's Geometry Dash icon kit. Since they're the personifications of Amor's Cube, Ship, Ball, UFO, Wave, Robot, and Spider, they are able to switch between their original icon forms and their human forms. While they remain as icons in their home game, they use their human forms in other games they visit so they can fit in with the environment and the other characters.
2. Bob isn't very good with stairs, mostly because he's a cube. He finds it difficult to climb up them, especially when he's in his human form, and if he even takes a single step down a set of stairs, he tends to tumble down and land headfirst when he reaches the bottom.
3. Bob is extremely agile and is able to jump very high. This is likely due to his origin as a Geometry Dash cube, which are required to jump through levels in order to avoid obstacles. Because of this skill, he enjoys doing activities that involve physical movement, especially obstacle courses and parkour.
4. Since he's based on the tenth ship icon, which is designed to look like a shark, Bosip's human form has quite a few shark-like traits. For example, he has pointy teeth, but they aren't easily noticeable since they're quite small. He also has a shark tail, but prefers to keep it hidden under his clothes. Sometimes when he's happy, his tail swishes.
5. Bob is terrible at spelling. This might be because his cube form doesn't have hands, so he's never learned how to write. Luckily, he has Bofo make a few corrections for him when he spells something wrong.
6. Since he's a Geometry Dash ship, Bosip loves to collect things, from coins to maps.
7. Bob has a short attention span and often gets distracted when he sees shiny things, especially Bosip's coin collection. He wonders where Bosip even keeps all his coins because he's collected so many.
8. Bosip is the kind of person who is always nice to other people he meets, especially if that person is insane in some way or another.
9. Bobal has a tendency to insult people 24/7.
10. Bobal likes the game Super Smash Bros., but he's not very good at playing it, which leads him to rage quit the game if he loses too many times. He mostly mains as Bowser.
11. Even though Bofo is supposedly a robot, he can experience human emotions but doesn't understand humor.
12. Bowaev is a huge Kirby fanboy and owns tons of games from the Kirby franchise.
13. Bobot is extremely intelligent and knows almost everything, but just doesn't care to share his knowledge with the other members of the Bob Gang.
14. Boder is a pretty chill guy most of the time, but he can be pretty dangerous if you mess with him.