All of the contestants and Four and X seemed to have been fused over night. The reason is still unknown. The objects that are fused create a new body based off of those objects. For example, Vine Covered Clear Pie Tray is Tree, Bottle and Pie. The 'Vine Covered' part comes from Tree; the 'Clear' part comes from Bottle; and the 'Pie Tray' part comes from Pie. This does not seem to apply to Algebraliens, Loser and Winner. Loser and Winner are substances, so they might make a new substance. Four and X made a... well, 4x thing. Their colors were mixed (making green) and it just looked like they were next to each other, connected. Might be the same for the other Algebraliens.

Saw - Gatey = Hard Hat [She/Her]

Eraser - Pen - Blocky = (Blocky) Erasable Pen [He/Him]

Stapy - Marker = (Purple) Coloured Glue Stick [He/Him]

Ruby - Flower = Perfume [She/Her]

Taggy - Cake = Edible Paper [They/Them]

Pin - Coiny = Thumb Tack [They/Them]

Fries - Puffball = Tater Tots [They/Them]

Match - Pencil = Lighter Pencil [She/Her]

Roboty - Basket Ball = Robot Ball [They/Them] [It/Its]

Firey - Leafy = Burnt Leaf [They/Them]

Firey Jr - Grassy - Rocky = Mossy Coal [He/Him]

Loser - Winner = Runner-Up [They/Them]

Yellow Face - Lollipop = YellowPop [They/Them]

Eggy - Clock = Egg Timer [They/Them]

Spongey - Barf Bag = Barf-Filled Sponge [They/Them]

Lightning - SnowBall = Energy Ball [He/Him]

Tennis Ball - Golf Ball - 8-Ball = Cue Stick [They/Them]

Gelatin - Donut = Jelly Donut [He/Him]

Tree - Bottle - Pie = Vine Covered Clear Pie Tray (VCCPT) [They/Them]

Balloony - Cloudy = Helium Balloon [He/Him]

Book - Taco = Food Menu [She/Her]

Foldy - Liy = Origami Light Switch [She/Her]

Bracelety - Ice Cube = Ringy [She/Her]

TearDrop - Woody = Sap [They/Them]

Fanny - Bubble = Bubble Blower [She/Her]

Pillow - Black Hole - Remote =  Soft Metal Black Hole Holder (SMBHH) [They/Them]

Puffball - Fries = Tater Tots [They/Them]

Robot Flower - TV = (Robot) Flower-Themed TV [They/Them] [It/Its]

David - Dora = Dorid [They/Them]

Needle - Bell = Bell Clapper [She/Her]

Naily - Bomby = Spike Bomb [They/Them]

Nickel - Profily = Metal Profile Picture [They/Them]