I would consider Marionette to be a dark character, meaning that manipulation of others is not really in sync with the innocent Yugi-like minds of children.
Batterman AA is a good card. It promotes teamwork for both offense AND defense.
Battery Charger. If you're going to use AA batteries, you need to recharge them. Today, many toys are electronic and require batteries.
Enemy Controller. Today's kids know all about Nindendo, Playtation and XBOX. Use this card to stop attacks or borrow opponent's monsters. Also useful when a Batteryman AA is not in sync with its companions.
Blockman has been mentioned.
Dekoichi the Battlechanted Locomotive. OK, so currently, its CC material, but who remembers Thomas the Tank Engine? OK, so they're not really the same, and Dekoichi's a Dark monster with a not so pleasant face, but just treat it like a toy train.
Dice Jar. Heh...random, but it looks like a Joey card with insanely, potentially game ending results. One of the best ways to win (or lose) and laugh about it!
Freed the Matchless General. You would need several decent warriors to go along with him, but speaking just for himself, this card promotes leadership and tactical prowness. Command your forces and call on the best men to win the fight...er duel!
Reinforcement of the Army. As above.
Marauding Captain, Command Knight. Promote decoys, teamwork, offense, defense.
United We Stand. Goes along the teamwork theme. The origin of the name doesn't have to be explained just yet.
Gyroid. Has to be attacked twice to be destroyed. Cartoony and a decent staller most of the time.
Kuriboh and Winged Kuriboh. Both save you from battle damage in one way or another and both are cute little fuzzballs. Nevermind Kuriboh is Dark and Fiend.
Mecha Dog Marron. This incarnation of the oh so kawaii Outstanding Dog Marron is now a wooden mechanical toy! Costs 1000 to destroy, so is useful in teaching the lessons of lifepoint management. Who needs H&R when you have YU Gi Oh??!!!
Morphing Jar. A jar that refreshes both players hand and therefore can turn the tide of the duel. If you were looking for cookies, this isn't the right place to look.
Morphing Jar 2. Unrestricted to 3 per deck. Makes for a useful deckout like feature and 99% battlephase ender.
Perfect Machine King. If you like Gundam, this is for you.
Rescue Cat. Another kawaii neko that promotes teamwork. Big guys always topple to multiple annoying little weenies.
Rocket Warrior. If you've seen Joey duel, you've seen Rocket Warrior. Use Invincible Mode and promote teamwork!!!
Time Wizard. OK, so he has a destruction effect, but you have to win the duel in one way or another. Plus, its another Joey card that relies on chance. Oh...and if you have Baby Dragon on the field, and call Time Wizard's effect right, you get Thousand Dragon (shhhh...House rules only!!!)
Treeborn Frog. It just doesn't give up! Neither should you.
Graceful Dice. Dice are fun. Why not add a little boost to your monsters during the Damage Step as well?
Graceful Charity/Angel's Gift. It's giving and receiving all in one (give to the graveyard, receive from the deck)
Magical Mallet. Cartoony feel to it and a selectable Reload.
Mystic Wok. Who doesn't like good food? Cook up some great meals with this card and gain LP in the process!!! Combo with Frog, Enemy Controller.
Final Jeopardy: This card requires the correct naming by the opponent of the bottom monster card in your graveyard. If correct, remove that monster from play, if incorrect, special summon that monster to your side of the field. You have 30 seconds, good luck.
Jeopardy Tune: Think
Answer: What is Question?
Wave Motion Cannon. With so many sci fi movies with amazing graphics and special effects, we revert to a cartoony like blaster that could go off at any time!!!
A Rival Appears! decent effect, cute art
Mirror Force. Without mirrors to reflect the light, you wouldn't be able to see the images of your toys.
Fairy Box. Another Joey chance card. Decently annoying effect.
Interdimensional Matter Transporter. I activate this card's effect so you can't attack my mighty Rescue Cat this turn!
That's all I could come up with after a quick skim through Ronin. Hope this helped!
