Garnold has a hobby for building things, as he invented Fun Bot and Mr. Fun Computer with Clukr. With his calm, collected, and rich demeanor, he is regarded as a great helper and is always generous to those around him, offering advice on how to impress someone and encourage confidence. Despite this, Garnold is insecure of his own looks, which is why he built his suit to look less 'boring.' He doesn't interact much unless talked to first, due to having little bravery. Garnold is mute (It's just possible, not certain yet), so he communicates with his visor, using expressions, visuals, and body language. Sometimes, he also uses recorded voices that are cropped to combine what he wants to say in each sentence. He gets really talkative to those he trusts or who he's comfortable with, especially Clukr. Sometimes, Garnold gets carried away and when told by it, Garnold gets embarrassed and looks away.

Clukr, along with Garnold, is highly intelligent, and is known for being the co-creator of Fun Bot and Mr. Fun Computer. Clukr is always focused and honest (though he can be a bit brutal with it at times) and is easily angered when it comes to people interrupting his work. Though he speaks in an annoyed tone, his intentions are usually well-mannered. Despite everything, Clukr is calm and collected, but he can be sarcastic at times.

Although Mr. Fun Computer's personality is rather vague and not much is known about him, he is likely a happy and fun-loving character judging by his appearance. Both Mr. Fun Computer and Fun Bot were invented by Clukr and Garnold. Despite this, Mr. Fun Computer actually dislikes Clukr and Garnold because of them favouring Fun Bot more than him, although him and Fun Bot have a close bond.

As the main antagonist, Black is an ominous and violent character, being the reason the Sprunki world goes into chaos. He is stated to be "Frick'd up from the start." Despite this, Black sometimes breaks character and acts like a kind grandfather. He is easily distracted and forgetful, as he forgets to kill Gray and Jevin. He is also unable to kill Fun Bot, as he is immortal.

Brud is a dim-witted character who can only understand basic concepts such as colors, counting, and sympathy. He can talk, but not in full sentences. When brud is alone, he eats moss.

Durple is a calm character known for his serene demeanor, much like Sky. He enjoys playing and collecting trumpets and has a keen fondness for the color purple, his favorite color.

Tunner’s personality is extremely similar to a stereotypical Western sheriff, hence his Western accent and ownership of a revolver, which he is somewhat skilled at aiming. He is extremely righteous and enjoys protecting people from danger as a hobby.

Not much is confirmed about Fun Bot's personality. However, given his name, it is likely meant to spread fun in the mod’s universe. He was invented by Garnold and Clukr, who are considered his creators. Fun Bot also has a father-son relationship with them.

Gray is best described as an unhappy man who rarely smiles, somewhat like Jevin, which is a quite large contrast compared with most Sprunkis. He usually prefers to be alone and distant from others.

Raddy is a high-tempered character who prefers solitude. He enjoys watching sports on television, exercising, and being left alone. Raddy does not have any friends among the rest of the Sprunkis, although Simon wants to get along with him due to Raddy's scent of strawberry milk.

Oren is a laid-back character who regularly uses slang terms in his speech. He likes rabbits, because he is in a relationship with Pinki. in the first place, who later liked back for “being cool.” He is also best friends with Simon and Durple.

Pinki is known for her kind and caring demeanor. Since she is a rabbit, she loves and prefers hopping, rather than sliding like the other Sprunkis. She and Vineria are close friends and is in a relationship with Oren.

Wenda is rude, arrogant, selfish, and distant from others. She was rather calm and sane at first, before her and Gray stopped being friends. Most of the time, she bullies, insults, and acts cruel towards the others, purely so they can hate her and not have any attachment to her.

Vineria is a calm and laid-back character. She enjoys gardening as a favorite hobby and possesses multiple wigs, but the one she wears in-game is her favorite, presumably because it was plant-based.

Simon is a kind, confident, and a fast runner, and also loves chocolate. He is the main protagonist of Sprunki.