Few Pixel arts 6 and LORE again
My own trio (almost like Bereft):
Killer Sans from Undertale: Something New
And Chara from Storyshift
"Trio have no real backstory (I mean how they even met). Like any trio, GAMBIT has an open prologue. GAMBIT is also conceived as a trio invincible to anyone below the hacker level. Killer Sans has completely absorbed Chara and controls the reset button. He is also now a spirit. StorySpin Sans is also a spirit who absorbed a player's soul, as he is a monster by nature and can save, load, and reset like Killer. He is essentially as powerful as Killer. And Chara from Storyshift is the same Chara from the Bad Time Trio. She can attack with knives, Swap Papyrus attacks, Classic Sans attacks, Swap Sans attacks, Classic Papyrus attacks, and Asriel's Storyshift attacks. She has less determination, but her attacks are the most difficult. She is also a spirit."
"About interactions: They constantly interfere with each other's attacks and communicate nonverbally through glances. They compete to kill the enemy first. They also attack in turns, but of course, not singly. They attack in pairs or threes. And they don't give the enemy a chance to make a move. And they can do this indefinitely. Even if enemy attack out of turn, they ignore attacks, being ghosts. Their attacks are also chaotic, which is what makes them difficult. They're not synchronized at all and simply try to kill faster. And each one has a unique gimmick: Chara uses complex and sophisticated attacks. Killer spams with knife and blasters. But for kicks, like Omega Flowey, he can load up and repeat the same sequence mid-attack until he gets bored. StorySpin Sans also emphasizes fast-paced, hurricane-style gameplay, but often bends the game rules as he pleases. He can suddenly give the enemy a turn and then project attacks directly into the menu. Or he can give the enemy a magical shield (like a noob mode) and take it away at any convenient or inconvenient moment. Or, for example, he can dive into the enemy's inventory and steal weapon, armor, or healing food."