The two Fusions I want to understand better are (the effect is identical for both):
Super Robolady
You can Special Summon "Super Roboyarou" by returning this card from the field to the Extra Deck. You cannot use this effect during the same turn this monster is Special Summoned. In addition, increase the ATK of this monster by 1000 points during the Damage Step when this monster inflicts Direct Damage to your opponent's Life Points.
Super Roboyarou
You can Special Summon "Super Robolady" by returning this card from the field to the Extra Deck. You cannot use this effect during the same turn this monster is Special Summoned. In addition, increase the ATK of this monster by 1000 points during the Damage Step when this monster battles with a monster.
July 2003 Machine Fusion
Monsters
3 Mechanicalchaser
3 Robolady
3 Robotic Knight
3 Roboyarou
1 Fiber Jar
1 Injection Fairy Lily
1 Jinzo
3 Thunder Dragon
1 Yata-Garasu
Spells
2 7 Completed
1 Change of Heart
1 Dark Hole
1 Fusion Gate
2 Graceful Charity
1 Harpie's Feather Duster
1 Limiter Removal
1 Monster Reborn
3 Polymerization
1 Pot of Greed
1 Premature Burial
1 Raigeki
1 Snatch Steal
1 United We Stand
Traps
1 Call of the Haunted
1 Magic Cylinder
1 Mirror Force
Extra Deck
3 Super Robolady
3 Super Roboyarou
3 Twin-Headed Thunder Dragon
Here is a link to the YouTube playlist for this deck:
https://www.youtube.com/playlist?list=PL4fjHQoGTndWDbg00Uvv4-4qJ8bP5eolV