Bob

Bob, short for Brains On Board, is a cyborg and Thaddeus Euphemism's sidekick.

Appearance and anatomy
Bob has a large, square, silver, metallic head and a slightly smaller main body. His legs, arms, and neck are also silver and metallic, and they can stretch to great lengths. They appear to be divided into sections. He has long, black fingers and large, rounded, toeless feet.

On top of his head is a round glass dome, in which his brain is visible.

Besides his brain, he has some form of digestive system as he can eat and it's implied that he can fart, too, with his character profile stating that he can also poop. He also has some form of urinary system as one strip reveals he can pee, however, it is unknown how said urinary system works because he explicitly does not have a heart, meaning he probably lacks blood. He is also able to survive being speared through his torso.

When he became a cyborg, some of his "lower functions", including, but not limited to, sexuality and profanity, were removed, however, they occasionally surface when he's bored.

While Bob usually eats and drinks in the normal way, he was once seen drinking coffee by directly pouring it onto his brain. He needs some sleep, as evidenced by that same strip having Thaddeus ask if he's had a "rough night", but not very much, as revealed in the Conference arc.

It is also revealed that he needs oxygen to support his brain.

Personality
Bob has a wry sense of humour and takes it on himself to make "witty retorts" to Thaddeus whenever he can.

Despite occasionally criticising Thaddeus for the latter's wacky behaviour, Bob is not above acting wacky himself on occasion. For example, when asked to clean the toilet once, he picked up the plunger and said, "Exterminate!".

Bob is generally more cautious than Thaddeus, although occasionally he will jump into a risky adventure as well. He is sometimes a bit timid, too, as evidenced by him being too scared of the flying monkeys in The Wizard of Oz to watch the entire movie.

He greatly enjoys coffee, which he is extremely finicky about, causing baristas to find him annoying. He also seems to be affected by caffeine, but again, it is unknown how this works due to him not having blood.

Trivia

 * His brain is his only organic component, and it's unknown where it came from, though it's rumoured to have belonged to a dead friend of Thaddeus's.
 * He has a "food processor" instead of a stomach.
 * His lungs are made of iron.