The big beater the Kozmo deck needs.  Tough to beat in battle, can't be targeted and even when it is destroyed (via Raigeki and such), it replaces itself with a Sliprider (which can pop an s/t) or any of the LV4's.  The LP gain effect is definitely appreciated to compensate for the costs of the other Kozmo cards, and since it's harder to get rid of than your average card, it wouldn't be too hard to sit on this guy for at least 2 turns.
 
3.75

Kozmo Forerunner, here's the heavy hitting Monster for this Deck, at least for now.  Level 7, Light, Machine, an excellent 2800 attack (though the 1400 defense is a bit troubling).  So for starters, Forerunner can't be targeted by your opponent's card effects.  More and more cards target, hence more are played regularly, making that effect only better as time goes by.  Oh, and remember how a bunch of the low level Kozmo cards make you lose (small amounts of) Lifepoints for various effects.  This guy GIVES you 1000 Lifepoints during each Standby Phase.  If this card is destroyed and sent to the Graveyard, by Battle OR Card Effect, you can remove it from play to Special Summon a Level 6 or lower Kozmo Monster from your Deck.  Honestly, great attack, three equally good effects, and you're never actually going to Tribute for him.  He's very nice for the Deck also

Rating:  3.75/5
Art:  5/5

Finally we have reached Friday. Today's card is Kozmo Forerunner. This could be considered the boss monster of the set. This is a Level 7 Light Machine-Type monster with 2800 Atk and 1400 Def. Sacred Sword of Seven Stars can be played with this. Just let Kozmotown bring it back for you at the cost of 700 LP. All the Kozmo monsters are excellent Honest bait. Continuing with the OTK theme, use Limiter Removal to pump this to a whopping 5600 ATK. Use two Limiter Removals and your opponent loses to this 11200 ATK if they have an ATK position monster on the field with 3200 Atk or less. It can go toe to toe with other boss monsters and even gets around El Shaddoll Construct's effect. 
 
How does it survive the boss to end all bosses? It can't be targeted by opponent's effects. That is great protection from a whole host of cards. No Compulsory Evacuation Device, no Book of Moon, no Effect Veiler, Then, if it survives to the Standby Phase (and it should it's strong and can't be targeted), you gain 1000 LP. This mitigates the marginal Life Point costs of the other Kozmo cards. Finally, If this card is destroyed and sent to the graveyard, you get to banish it and Special Summon any Level 6 or lower Kozmo monster from your deck. Iike this theme but I love this monster in particular. 
 
Score: 4.5/5 I wish it couldn't be targeted OR destroyed.
Art: 4/5 Bulky ship is strong while Sliprider is in the background being fast and destroying traps. I love when the images match the theme. 

Like Sliprider, this ship is based on the Silver Shoes of the original Oz text. I'm also realizing that there's a “Star Wars” inspired theme here too, but screw that! I'm all for the Oz theme! 

At a whopping 2800, he can take care of most oppositions, but it's his effect that really wins the day.

During every Standy Phase, you gain 1000 LP, which means paying LP for other Kozmo effects just got a whole less trivial. Also, he's immune to target effects from your opponent, meaning he can't fall into Trap Holes (Botomless or otherwise), nor can he be Shrunken down or controlled via Creature Swap or Enemy Controller. But he can be Torrentialed and Mirror Forced, so that's a downer.

If he's destroyed by either battle or card effect, you can banish him to farm for another Kozmo monster, level 6 or under. And lest we forget, Kozmotown can bring him back from oblivion, so there's potential here for a comeback.

The Kozmo theme is still young, but so far it's looking very impressive. Here's looking forward to new Oz-based cards in the near future. 

Final Score: 5/5