Ah the sweet memories I had with Yu-gi-oh. I still have my collection of cards. Over 2000 or so. I have such fond memories not only watching the show but also playing with my friends. Yugi will be great I'm sure. Here's a few suggestions I have for his monsters:
Squirtle:
Main Suggestion - Kuriboh
Other Suggestions - Watapon, Red Gadget, Green Gadget, Yellow Gadget, Marshmallon
Ivysaur:
Main Suggestion - Chimera the Flying Mythical Beast
Other Suggestions - Gaia the Fierce Knight, Gazelle King of Mythical Beasts, Catapult Turtle
Charizard:
Main Suggestion - Slifer the Sky Dragon
Other Suggestions - Eye of Timaeus, Curse of Dragon, Winged Dragon Guardian of the Fortress, Archfiend of Glifer, Gandora the Dragon of Destruction
So, yeah, just if you needed ideas for monster to go with Yugi...
Yeah, Yu-gi-oh was fun to play with friends... Ah... Good times...
And Eye of Timaeus is a spell card XD
I was thinking Summoned Skull is more iconic with Yugi... I actually thought of:
Squirtle: Winged Kuriboh
Ivysaur: Dark Magician (use petals as skirt-thing and shoulders, outer bulb leaves as head, make Ivy skinny, staff from the actual inner bulb)
Charizard: Summoned Skull (wings, and he's awesome)
FS: Slifer the Sky Dragon/ Exodia
Ivysaur:
Main Suggestion - Chimera the Flying Mythical Beast
Other Suggestions - Gaia the Fierce Knight, Gazelle King of Mythical Beasts, Catapult Turtle
If you could do that, you'd be my hero.