The Announcer seems to be mature and reserved, often keeping calm and collected, partially because he is a robot. Despite his good nature, he does have moments of being unfair towards others, like not caring that he sold Dream Island to Leafy, and even hides this information from Bubble when she asks about it.
He's also shown to have a sense of humor when it's at the contestants' expense. For example, he laughed before dropping water balloons on the contestants in the ladder race

A Weird Talking Metal Speaker Box

Blender is a recommended character that was up for voting in "You Know Those Buttons Don't Do Anything, Right?" to join Battle for Dream Island: The Power of Two, Blender is level headed but can make reckless decisions. This is shown by them stuffing their blending container with blueberries and plans to blend them up as a stunt, which later backfires. Or, how when Camera wants their lens cap, Blender takes it away from Onigiri which causes them to have a sad look on their face, They Them.

level headed reckless electric blender

Airy keeps a bored, deadpan attitude most of the time, and seems to lack in empathy, Airy is shown to be a very apathetic and detached person, disconnected and jaded, He likely does not have any malicious intentions in hosting his show, and simply views it as an innocent source of entertainment in his loneliness. He is unaware of the horribly negative impact it has made on all his contestants, and thinks that he is doing “a pretty.. good job.”

Bored, sadistic copper trawler lantern

9-Ball is a character that was up for debut in TPOT. In "You Know Those Buttons Don't Do Anything, Right?", 9-Ball didn't debut in TPOT, only receiving 1,033 votes and beating Leek by 19 votes, 9-Ball doesn't have a favorite letter, similar to how 8-Ball doesn't have a favorite number. She has a deadpan attitude as well, 9-Ball is a cream-colored billiard ball with a yellow stripe, She has an underlined number 9 on their top.

A billiard 9-ball, DOES NOT HAVE A FAVORATE LETTER

Although Coiny is nice sometimes, he is relatively rude most of the time. In addition, he occasionally has conflicts with others. The most notable of which is with Firey, he had an intense hatred toward him when the two frequently slapped each other in episodes, Coiny has also shown an ability of persuasion and charisma, He is also more of a leader and a strategist coming up with ideas to help his team, He is also thoughtful, He Him.

A metal coin that competed in BFDI, hates Firey

Nickel seems to be far more erratic than in previous seasons, sometimes spouting nonsensical sayings and phrases. He also cannot easily tell when someone's being sarcastic, He becomes a lot more positive during BFDI: TPOT, though he can still get frustrated when pushed, He Him.

A erratic, nonsensical 5¢ metal nickel

Anchor is a recommended character that was eligible for the debut for The Power of Two. In "You Know Those Buttons Don't Do Anything, Right?", Anchor didn't debut, having received 2,265 votes, placing 8th overall to join, Anchor is very helpful as they spare Two the trouble of eliminating them by making their own exit. They also don’t complain about being eliminated. Anchor is also tough, They are a Pirate, They Them

A very helpful and old ship anchor

Balloony is a generally kind character, but he won't take attitude from other characters, and can become irritable towards bossy teammates. Balloony has proven to be smart and good at problem-solving, similar to Tennis Ball. Balloony is also pretty brave. When deflated, he isn't capable of too much movement, let alone being able to even stand. Balloony can also be protective, as seen in "What Do You Think of Roleplay?", when he told Nickel not to stab Woody, He/Him

Battery is one of the eligible debuters for TPOT. They failed to join the show though, only receiving 2,507 votes, placing 5th, Battery is a quiet and happy character. They seem to agree with Avocado's opinions on Two. Battery can also be seen as smart, as they can make science experiments from pure natural electricity, Battery is a pine green AA-type battery. They don't appear to be based off any specific brand of battery, almost never speaks, They Them.

A quiet and happy lithium-ion, 9-volt battery 

Boom Mic is a recommended character and was up for voting to join TPOT, They were recommended by Abject Studios, A common running gag in their debuting appearances is that they'd accidentally hit their head on something, Boom Mic appears to be , as they show a nervous expression when Two calls them out. They are also shown to be a bit clumsy as seen in their audition and when they hit their head on their way down when eliminated from the debut, They Them.

Clumsly, nervous and quite jittery Boom Mic

8-Ball appears to be a #8 billiard ball, a ball used to play the table game billiards (also known as pool), 8-Ball always wants everyone to know that he does not have a favorite number, despite his name. He speaks with a bland, monotone voice, except when A Better Name Than That almost lost in "Today's Very Special Episode" because of him, he got emotional and almost started to cry when apologizing to Golf Ball, His favorate number is 8

A billiard 8-ball, DOES NOT HAVE A FAVORATE NUMBER

Avocado is shown to be a bit rude and speaks their mind. Avocado also picks up on things pretty fast, as they think people are too predictable when they are about to be eliminated, Avocado is an armless hass avocado that has a wide mouth and white eyes. Their mouth is animated differently; it resembles as if a slice was taken out of Avocado. It also shows the pit inside, Avocado is a character who was up for debut in TPOT. They failed to join though, only receiving 2,874 votes, placing 4th.

A rude hass avocado, one of TPOTS many debuters

Camera appears to be somewhat snarky and kind of a bully, as evidenced by when they make fun of Clapboard when they see them being eliminated from the debut. However, Camera also cares about their public image by requesting to have their face obscured with their lens cap in moments of embarrassment, Camera appears to be a digital single-lens reflex video camera, a portable small camera for general photography and film recording, They Them.

snarky jerk and kind of a bully Camera

Renown for his exceptional taste in sarcasm, Nickel is a critical character who is also snarky, churlish and ill-tempered. Nickel's most identifying trope is his trademark sarcasm, which he uses to convert mean thoughts in his head in order not to come off as rude and disrespectful to others. Though this strategy may not always work, Nickel still considers sarcasm as an art, and himself an artist, Although Baseball is the leader of The Grand Slams, Nickel occasionally takes over the as leader.