I admit this is... arguably the poorest of the Barian decks in terms of new custom cards, because Battlin' Boxers pretty much have a satisfactory range of cards in the T/OCG. Nevertheless, obligatory Chaos versions of certain Numbers, a way for Alito to make Lion Heart, and a couple of Counter stuff. Enjoy.
Structure Deck: Alito
The God-Breaker Fist
3x Battlin' Boxer Switchhitter
2x Battlin' Boxer Glassjaw
2x Battlin' Boxer Headgeared
2x Battlin' Boxer Counterpunch
2x Battlin' Boxer Bailout
2x Battlin' Boxer Shadow
1x Battlin' Boxer Sparrer
1x Battlin' Boxer Rabbit Puncher
1x Battlin' Boxer Rib Gardna
2x Battlin' Boxer Shock Punch
2x Flaming Knockout (retooled)
1x Ring Announcer (retooled)
1x Last Counter
2x Jolt Counter
2x Xyz Block
2x Dark Bribe
2x Fancy Footwork (retooled)
2x Corkscrew Counter (retooled)
1x Counter Clash (retooled)
15x Extra Deck:
1x Number 105: Battlin' Boxer Star Cestus
1x Number C105: Battlin' Boxer Comet Cestus
1x Number 80: Rhapsody in Berserk
1x Number C80: Requiem in Berserk
1x Number 54: Lion Heart
1x Number C54: Lion Soul
1x Number 79: Battlin' Boxer Nova Caesar
1x Number C79: Battlin' Boxer Supernova Caesar
1x Heroic Champion Excalibur
2x Battlin' Boxer Lead Yoke
2x Battlin' Boxer Cheat Comissioner
2x Battlin' Boxer Sucker Punch
Retooled / New cards:
Battlin' Boxer Shock Punch
LV 1 | FIRE | Warrior
100 | 100
If you control a "Battlin' Boxer" monster and your Life Points are lower than your opponent's: you can take 800 damage; Special Summon this card (from your hand or Graveyard). You can reduce the Level of all "Battlin' Boxer" monsters you control to 1. You can only activate each effect of "Battlin' Boxer Shock Punch" once per turn.
SPELL | Quick-Play
When a "Battlin' Boxer" monster you control destroys a monster by battle and sends it to the Graveyard: deal 1000 damage to your opponent and draw 1 card.
SPELL | Normal
If your opponent controls a monster(s) and you control no monsters: pay 2000 Life Points; Special Summon 1 "Battlin' Boxer" monster from your deck. You cannot Summon any monsters during the turn you activate this card, except "Battlin' Boxer" monsters. During the End Phase: destroy the Summoned monster.
TRAP | Continuous
"Battlin' Boxer" monsters you control are unaffected by the effects of Trap cards. Destroy this card if you control no "Battlin' Boxer" monsters.
TRAP | Counter
When your opponent activates a Trap card: Tribute 1 "Battlin' Boxer" monster you control; Special Summon 1 "Battlin' Boxer" monster from your Graveyard, then destroy 1 card on the field.
TRAP | Counter
During the Battle Phase, when a Counter Trap is activated: target 1 "Battlin' Boxer" monster you control and Banish 2 Counter Trap cards from your Graveyard; destroy all cards on the field except for that target.
Number C54: Lion Soul
RN 2 | EARTH | Warrior | Xyz
200 | 200
4 Level 2 monsters
If this card would be destroyed: you can Banish 1 Counter Trap card from your Graveyard instead. If this card has "Number 54: Lion Heart" attached to it as Xyz Material, it gains the following effect:
• If this card battles an opponent's monster, during damage calculation (in either player's turn): You can detach 1 Xyz Material from this card; your opponent takes any battle damage you would have taken from that battle, and the monster that battled with this card is destroyed.
Number C79: Battlin' Boxer Supernova Caesar
RN 5 | FIRE | Warrior | Xyz
2700 | 1800
3 Level 5 monsters
This card gains 300 ATK for each Xyz Material attached to it. When this card is destroyed and sent to the Graveyard: target cards your opponent controls up to the number of Xyz Materials that were attached to this card; destroy them, then Special Summon 1 Level 4 or lower "Battlin' Boxer" monster from your Graveyard. If this card has "Number 79: Battlin' Boxer Nova Caesar" attached to it as Xyz Material, it gains the following effect:
• When this card destroys another monster by battle: attach 1 Level 4 "Battlin' Boxer" monster from your deck to it as Xyz Material.
Battlin' Boxer Sucker Punch
RN 1 | FIRE | Warrior | Xyz
1000 | 2000
2 Level 1 monsters
Once per turn, during either player's turn, when a Counter Trap card resolves: you can immediately detach 1 Xyz Material from this card and Banish 1 "Battlin' Boxer" monster from your Graveyard; draw 1 card, then you can destroy 1 monster on the field (during the Chain).
Only Vector and Nasch left now. Those two will be interesting.