B.E.S XYZ

Basic Strategy:

Special summon your high level monsters using Zelos and beatdown your opponent while stacking the effects of multiple Boss Rushes so that when one of your B.E.S. cards are destroyed, each Boss Rush will then summon 1 monster during your end phase. With those summons you can create an effective barricade using B.E.S. Big core MK-3's graveyard effect to return your destroyed B.E.S. monsters to the deck, or go into one of your many XYZ options from your extra deck depending on your situation.

-Number 9: Dyson Sphere: A good defense and offense making it difficult to be destroyed by battle
-Number C9: Chaos Dyson Sphere: Build Materials and deal burn damage, also the option to go into Zeus after a few turns of taking your opponent's monsters as XYZ materials
-Number 6: Chronomally Atlandis and Number C6: Chronomally Chaos Atlandis: Good for reducing your opponent's lifepoints. Chaos Atlandis can also equip your opponent's larger monsters and if the equipped monster is a Number monster, you can set your opponent's lifepoints to 100. [Can also use Extra-Foolish Burial to give Chronomally Atlandis a buff)
-Number 38: Hope Harbinger Dragon Titanic Galaxy: Once per turn spell negate and equip, plus a good target for summoning Zeus
-Number 11: Big Eye: Steal your opponent's monster
-Number 101 Honor ARK and Number C101: Honor DARK: Number 101 is going to be one of the cards that you want to have in the graveyard so that C101 can revive itself. For that use Extra-Foolish Burial. This is good for equipping your opponent's stronger monsters and can come back as long as it had one XYZ material before it died while Honor ARK is still in the grave.
Red-Eyes Flare Metal Dragon: 500lp taxes for each card effect activated from your opponent. More effective the lower life points your opponent has.
Divine Arsenal AA-Zeus - Sky Thunder: Simple board nuke
Linkuriboh: A good card for defense