This is basically a topic I'm keeping up to figure out how a lot of stories could possibly become connected. It all starts with the broken madman Kozaky himself.

Branch Zero: Kozaky
"A workaholic (Fruits of Kozaky's Studies) fiend who devotes everything to his research (Iron Core Specimen Lab, Level Conversion Lab, Giant Kozaky, Woodborg Inpachi) into the languages of Dark World (Dark World). His mind has collapsed (Kozaky's Self-Destruct Button) because of working too hard (Overworked)." That'd indicate Kozaky was responsible for the creation/evolution of many monsters, but worked too hard, collapsing and killing himself.   --Yugioh! Wiki

Kozaky is a resident and scientist of D.D. (Different Dimension) somehow, but can be supported with his Type and ATTRIB. as Fiend/DARK.

Branch 1: Inpachi
Inpachi caught fire, Blazing Inpachi burns out into a Charcoal Inpachi which becomes a Woodborg with the help of Kozaky when it somehow makes it's way to D.D., or gets found by him.

Branch 2, fuses with 3: Magical Scientist
Magical Scientist worked with Kozaky as both a friend and Rival of science (Success Possiblity 0% is a trap example of MS messing with Kozaky's experiment data, revealing a first-time sabotage by him, turning him into a traitor, or it's just a simple rivalry prank.) He ran from one experiment from the Koa'ki Meiru machine called Compulsory Escape Device with another scientist in the Iron Core Specimen Lab possibly. Had a mishap with the fusion creature known as Thousand Eyes Restrict. Status currently unknown. (Banned card because it became too easy to summon Restrict. Now he's stuck inside T-ER and sent to the grave with him.)

Branch 3 fuses with 2: Koi'ki Meirus and the Iron Cores
Koa'ki Meirus may have been built/genetically created/magicly built or discovered and being experimented on by Kozaky in the Iron Core Specimen Lab with other scientists including Magical Scientist.

Branch 4: Kozaky's Giga Level Experiment
Kozaky found and tried to help the wounded Gagagigo in the Level Conversion Lab to become better (And become Giga Gagagigo.). He sent him on his way, upgraded to Giga, with Compulsory Evacuation Device and Monster Gate to go home, ready to take on his nemesis back in the real world. There is a possibility of changing a monster into level 5 with the LC Lab if you roll right.

Branch 5, fuses with 4, 6, and 7: The Story of Gagagigo
Gigobyte is the first stage of Gagagigo, and becomes Eria The Water Charmer's familiar. When he grew up, he may have either changed his tiny evil ways by meeting her or became an evildoer by becoming her possessor. Either way, Gagagigo is also the enemy of Freed The Unmatched General, both of them appearing and fighting in D.D. Boarder line, Draining Shield, and Dimensional Prison (Usually Gagagigo is at a disadvantage in the pictures.). Gagagigo was sent to the D.D. where Kozaky was, wounded and hurt. He took Gagagigo into the LC Lab and had converted him into Giga. It was a successful fix, but the redemption he found in leaving his bad ways is gone forever. After returning with Compulsory Evacuation Device and Monster Gate, he took Freed on once more. With a new Draining Shield he must deal with, possibly a side effect of the shield or his Cyborg body, he lost himself and became a red shell of the reptile he once was. Gogiga Gagagigo. ALTERNATE PATH: Instead of fighting Freed, He may have chosen to do more good and justice, becoming Gagagigo the Risen (Reptile Xyz, 3 level 4s, No effect like his series. ATK/DEF equal to Gogiga. Notice Giga is a 5 and Gogiga is 7+? That equals 3 tributes. Three level 4s for Risen. Same creatures of alternate paths if Giga was gone and Gogiga required three tributes.).

Branch 6, fuses with 5: Freed
Freed used to be a brave wanderer, then joining an army as a great tactical general. He fought Gagagigo many times, always having a trick up his sleeve. Somehow he had become darkened later in his life, maybe by the same Drain Shield that could've been the cause of Gogiga Gagagigo, Now Dark General Freed.

Branch 7, fuses with 5: Eria and the Attribute/Possessed Charmers.
Eria had Gagagigo as a familiar during his Gigobyte stage, soon possessed by him, like most of the other charmers, except for Lydia the Light Charmer. If all the Charmers hair was green instead of their current colors, like Wynn the Wind Charmer's, you'd mistake them all to be Gustos.

Wynn may be the only non-Gusto archetype Gusto, dressed and colored just like them, but can only be supported by WIND and Spellcaster supports.

Branch 8: Kozaky Branches Break-off Point.
The Gustos are one of the Four Tribes in the DUEL TERMINAL story.
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If anyone would like to correct or add to the Branches, that would be great. It can help under stand all of the stories somehow linked to poor old Kozaky.

Ty Rain/Gallows for the info that Gagagigo didn't LOOK for Kozaky, he was FOUND and upgraded in order to be well again.

did you get this idea from youryugiohchannel?

No, just got into the guy at the end of the Inpachi story who fixed Charcoal into Woodborg. Figured I'd build a deck for the hell of it, but it's reaching A LOT further than my expectations. So i built this to help me remember the difference one workaholic demon has done for Yugioh!.

Btw, idk who youryugiohchannel is. : P

I dont really know how to organize this though. 8/

There is another mistake: It is Giga Gagagigo that is ent flying with Copulsory Evacuation Device and he passes back into his own dimension with the Monster Gate, yet another card.

Kozaky is so awesome


WHOOOOT PAST BLAZER

Yesh, he is. Wish he didnt lose his mind. Imagine Kozaky still doing his crazy experiments to this day, lol. Who knows what he could influence or make.