>>151237871
Holactie (God Fusion)
Timaeus the Knight of destiny (More than Infinity attack monster)
Black Luster Soldier, higher base stats than Dark Magician, Envoy of the Beginning was in his GX deck.
Valkyrion the Magna Warrior, higher base stats than Dark Magician and the Manget warriors played a key role in defeating the god cards.
Buster Blader, Monster specifically designed to counter Dragons, can fuse with Dark Magician into Dark Paladin
Silent Magician + Silent Swordsman, Higher base stat than Dark Magician, specifically used by Yugi to defeat Atem
Gandora Dragon of Destruction, Field Nuke that gets stronger for nuking things
Summoned Skull, same statline as Dark Magician, duelist kingdom MVP
Beast of Gilfer, when sent to the graveyard debuffs an enemy permanently
Kuriboh, blocks enemy attack from hand plus the multiply wall and Kuriboh Brothers to swarm
Mammoth Graveyard, fuse into enemies to rot them from the inside out
Obnoxious Celtic Guardian cant be destroyed by things significantly stronger than it
Electromagnetic Turtle, blocks enemy attack from grave

Dark Magician also has different forms like Palladium Oracle Mahad, Magician of Black Chaos, Sorcerer of Dark Magic, Dark Sage, as well as different forms with Timaeus (Spell card) as well as Dark Magician having a Dragon Knight form.

And then we can get into the DSOD stuff if you want, Yugi's Magician girl deck would probably be incredibly obnoxious to deal with in the context of pokemon.