Dream Clown and cards that have effects similar to that of Dream Clown work very well to destroy Toon monsters since they cannot attack right after they are summoned. To make it sure, you may use support cards such as Earthquake to change the battle position of Dream Clown and Windstorm of Etaqua to defend it from being attacked.
Some of you may have already known, High Score Cerberus is a deck only used to get high score with Mythical Beast Cerberus. The monster easily boosts it ATK more than 10,000, and you can get the assessment of Over 9,999 Damage. For a sample deck recipe, check the link below.
Basically when you have a high-ATK Cerberus, Pegasus set do not summon but set a monster. However, Toon Goblin Attack Force is different. Ignoring your Cerberus, Pegasus gets the monster to attack your Life Points directly since it switch the battle position of itself once it attacks.