First off, the card that really grabbed my attention and makes the deck a lot more fun than before: Mask Change.
This card is just amazing, especially if you combine it with Masked Hero Goka and Masked Hero Vapor (most notably Vapor). Goka is a fire Hero fusion that gets stronger for each Hero in the grave, and Vapor is a Water Hero fusion that is unable to be destroyed by card effects. Both can only be summoned via Mask Change from the Extra Deck.
Now here's the fun part, Masked Hero Vapor already has good compatibility with Absolute Zero, since you can use Mask Change to clear field for a direct attack and summon a Hero that can only be stopped by battle (or simple removal, but shhhhh...).
There's also another Hero, Vision Hero Adoration.
Warrior/Fusion/Level 8/Dark2 "Elemental Hero", "Destiny Hero", "Evil Hero", "Masked Hero", or "Vision Hero" monsters
Once per turn, select 1 Hero monster you control other than this card and 1 monster your opponent controls. Your opponent's selected monster loses ATK and DEF equal to your selected monster's ATK until the End Phase. (Still unconfirmed at the moment, but just in case).
What makes this Hero interesting is the compatibility with all Hero cards, as well as finally having that Dark hero fusion that was missing (even though some wanted it to be an E-Hero). It also has an attack modifying effect (hopefully that's it, since it isn't bad) that can help cut your opponent's bigger monsters down to size.
And last, there's another spell for heroes...A Hero Arrives
SpellActivate only if you control no face-up monsters. Pay half of your Life Points to Special Summon 1 Level 4 or lower "Hero" monster from your Deck, except "Hero Kid".
While it is a risky card to use and will probably the least used out of the previous cards mentioned tonight, it serves as a last resort for any Hero deck.
With the Masked Heroes finally arriving soon in the OCG, let's hope these aren't the only ones. They are very fun to use and could really give Hero decks a boost.