The term Aggro, short for Aggression, has come to describe any Deck that has been constructed with fast-paced, aggressive tactics. Usually, an Aggro deck is a modified Beatdown Deck fitted with elements from other decks such as a Control Deck in order to better control the duel and continue to damage the opponent during the instances where their monster attacks are temporarily blocked.
Some aggro monsters are "Cyber Dragon", "Hydrogeddon", "Morphtronic Radion", "Botanical Lion", "Banisher of the Light" and "Legendary Jujitsu Master" because they can overwhelm many other monsters with their effects.
If you want to destroy the structure of well-structured and successful decks which only can be successful by summoning with special summons, play "Royal Oppression" to negate those summons and destroy these monsters by only paying 800 Life Points. As your opponent can use this effect too, you should only Normal Summon or Flip Summon. Try to destroy other structures of your opponent by playing monsters that remove from play cards from the graveyard and save these monsters by playing "Shrink", "Waboku" and "Prime Material Dragon". An incredible option is "Kuraz the Light Monarch", since whenever he's Summoned he may destroy up to 2 cards your opponent controls (although he cannot attack for that turn).
An Aggro deck, which is much weaker but possible to play, is one based on "The A. Forces" or "Solidarity", some Warrior-type monsters with swarming effects, "Burden of the Mighty" and "Royal Decree". Use the Warrior-swarming effect with "The A. Forces" to multiply your attack easily and "Burden of the Mighty" to weaken your opponent. With "The A. Forces" you can summon "Marauding Captain" and, with its effect, summon "Command Knight", to have 2 monsters with 2000 ATK. This deck's main weakness is cards that destroy Spells and Traps. "Judgment of Anubis" may help you get rid of these cards. "Royal Decree" may only be used for a reversal when your opponent tries to stop you with Traps.