NEO-EN 001 NeoDragon
FIRE / Dragon / Level 4
ATK 1800 / DEF 1800
This monster’s ATK and DEF can’t be changed by card effects. When destroyed, your opponent takes 800 damage.
Attack Name: Neo Flame

NEO-EN 002 NeoSaurus
EARTH / Dinosaur / Level 6
ATK 2300 / DEF 1900
This monster’s ATK and DEF can’t be changed by card effects. If this monster attacks a monster whose current stat is higher than this card’s, destroy the attacked monster.
Attack Name: Neo Smash

NEO-EN 003 NeoWarrior
EARTH / Warrior / Level 4
ATK 1600 / DEF 1400
This monster’s ATK and DEF can’t be changed by card effects. When summoned, add 1 card with ‘Neo’ in its card name to your hand. (You can’t select a card if it has ‘Neos’ or ‘Neo-Spacian’ in its name.)

NEO-EN 004 NeoSorcerer
DARK / Spellcaster / Level 4
ATK 1700 / DEF 1000
This monster’s ATK and DEF can’t be changed by card effects. When a Spell card is activated, gain 300 LP. Your opponent also takes 300 damage.

NEO-EN 005 NeoMonarch
LIGHT / Warrior / Level 6
ATK 2400 / DEF 2400
This monster’s ATK and DEF can’t be changed by card effects. When Tribute Summoned, destroy 1 card your opponent controls. Your opponent takes 500 damage.

NEO-EN 006 NeoSerpent
WATER / Sea Serpent / Level 5
ATK 2100 / DEF 1800
This monster’s ATK and DEF can’t be changed by card effects. This card can attack directly only if all your opponent’s face-up monsters are Level 6 or higher.

NEO-EN 007 NeoGuardian
EARTH / Rock / Level 3
ATK 0 / DEF 2400
This monster’s ATK and DEF can’t be changed by card effects. If destroyed by your opponent’s card effect, Sp. Summon this card on your next End Phase from your Graveyard or removed cards.

NEO-EN 008 NeoMech
EARTH / Machine / Level 7
ATK 2600 / DEF 2000
This monster’s ATK and DEF can’t be changed by card effects. When this card destroys a monster by battle, draw 1 card.

NEO-EN 009 NeoDragon EX
FIRE / Dragon / Level 8
ATK 2800 / DEF 2800
Sp. Summon this card from your hand by Tributing 1 ‘NeoDragon’ you control and discarding 1 card. This monster’s ATK and DEF can’t be changed by card effects. When destroyed, your opponent takes 1200 damage.
Attack Name: Neo Flame EX

NEO-EN 010 NeoSaurus EX
EARTH / Dinosaur / Level 9
ATK 2900 / DEF 2300
Sp. Summon this card from your hand by Tributing 1 ‘NeoSaurus’ you control and discarding 1 card. This monster’s ATK and DEF can’t be changed by card effects. If this monster attacks a monster whose current stat is higher than this card’s, destroy the attacked monster and remove it from play.
Attack Name: Neo Smash EX

NEO-EN 011 NeoWarrior EX
EARTH / Warrior / Level 6
ATK 2200 / DEF 1800
Sp. Summon this card from your hand by Tributing 1 ‘NeoWarrior’ you control and discarding 1 card. This monster’s ATK and DEF can’t be changed by card effects. When summoned, add 2 Equip Spells with ‘Neo’ in their card names to your hand. (You can’t select a card if it has ‘Neos’ or ‘Neo-Spacian’ in its name.)

NEO-EN 012 NeoSorcerer EX
DARK / Spellcaster / Level 4
ATK 2000 / DEF 1300
Sp. Summon this card from your hand by Tributing 1 ‘NeoSorcerer’ you control and discarding 1 card. This monster’s ATK and DEF can’t be changed by card effects. When a Spell card is activated, gain 500 LP. Your opponent also takes 500 damage.

NEO-EN 013 NeoMonarch EX
LIGHT / Warrior / Level 8
ATK 2400 / DEF 2400
Sp. Summon this card from your hand by Tributing 1 ‘NeoMonarch’ you control and discarding 1 card. When Special Summoned by this effect, destroy 2 cards your opponent controls. Your opponent takes 1000 damage. This monster’s ATK and DEF can’t be changed by card effects.

NEO-EN 014 NeoSerpent EX
WATER / Sea Serpent / Level 7
ATK 2300 / DEF 2100
Sp. Summon this card from your hand by Tributing 1 ‘NeoSerpent’ you control and discarding 1 card. This monster’s ATK and DEF can’t be changed by card effects. This card can attack directly only if all your opponent’s face-up monsters are Level 4 or higher.

NEO-EN 015 NeoGuardian EX
EARTH / Rock / Level 5
ATK 0 / DEF 2800
Sp. Summon this card from your hand by Tributing 1 ‘NeoGuardian’ you control and discarding 1 card. This monster’s ATK and DEF can’t be changed by card effects. If this card is removed from the field by your opponent’s card effect, Sp. Summon this card on your next End Phase from your hand, Graveyard or removed cards.

NEO-EN 016 NeoMech EX
EARTH / Machine / Level 8
ATK 2900 / DEF 2400
Sp. Summon this card from your hand by Tributing 1 ‘NeoMech’ you control and discarding 1 card. This monster’s ATK and DEF can’t be changed by card effects. When this card destroys a monster by battle, draw 2 cards.

NEO-EN 017 NeoCyber Dragon
LIGHT / Machine / Level 5
ATK 2100 / DEF 1600
This monster’s ATK and DEF can’t be changed by card effects. If your opponent controls monsters and you don’t, this card can be Sp. Summoned from your hand.
Attack Name: Neo Strident Blast

NEO-EN 018 NeoCyber Dragon EX
LIGHT / Machine / Level 7
ATK 2500 / DEF 2000
Sp. Summon this card from your hand by Tributing 1 ‘NeoCyber Dragon’ you control and discarding 1 card. This monster’s ATK and DEF can’t be changed by card effects. This card can attack twice during your Battle Phase.
Attack Name: Neo Strident Blast EX

NEO-EN 019 NeoSpider
DARK / Insect / Level 2
ATK 300 / DEF 700
This monster’s ATK and DEF can’t be changed by card effects. When this card is flipped, destroy 1 monster your opponent controls.

NEO-EN 020 NeoSpider EX
DARK / Insect / Level 3
ATK 500 / DEF 1000
Sp. Summon this card from your hand by Tributing 1 ‘NeoSpider’ you control and discarding 1 card. This monster’s ATK and DEF can’t be changed by card effects. When Sp. Summoned in this way, destroy 2 monsters your opponent controls.

NEO-EN 021 Neo-Armed Dragon LV3
WIND / Dragon / Level 3
ATK 1500 / DEF 1200
This monster’s ATK and DEF can’t be changed by card effects. During your Standby Phase, send this card to the Graveyard to Sp. Summon 1 ‘Neo-Armed Dragon LV5’ from your hand or Deck.

NEO-EN 022 Neo-Armed Dragon LV5
WIND / Dragon / Level 5
ATK 2500 / DEF 1900
This monster’s ATK and DEF can’t be changed by card effects. During your Main Phase, discard 1 monster from your hand to destroy 1 face-up monster your opponent controls with an ATK that is equal to or less than the ATK of the monster you discarded. During your End Phase, if this card destroyed a monster by battle, send this card to the Graveyard to Sp. Summon 1 ‘Neo-Armed Dragon LV7’ from your hand or Deck.

NEO-EN 023 Neo-Armed Dragon LV7
WIND / Dragon / Level 7
ATK 2900 / DEF 1300
You can’t Normal Summon/Set this card. Sp. Summon only by the effect of ‘Neo-Armed Dragon LV5’. This monster’s ATK and DEF can’t be changed by card effects. During your Main Phase, discard 1 monster from your hand to destroy all monsters your opponent controls with an ATK that is equal to or less than the ATK of the monster you discarded. If this card is targeted by ‘Level Up!’, negate that card, send this card to the Graveyard, and Sp. Summon 1 ‘Neo-Armed Dragon LV10’ from your hand or Deck, regardless of its summon conditions.

NEO-EN 024 Neo-Armed Dragon LV10
WIND / Dragon / Level 10
ATK 3200 / DEF 2200
You can’t Normal Summon/Set this card. Sp. Summon only by Tributing 1 ‘Neo-Armed Dragon LV7’ you control. This monster’s ATK and DEF can’t be changed by card effects. During your Main Phase, discard 1 card to destroy all face-up monsters your opponent controls. If this card is targeted by ‘Level Up!’, negate that card, send this card to the Graveyard, and Sp. Summon 1 ‘Neo-Armed Dragon Infinity’ from your hand or Deck, regardless of its summon conditions.

NEO-EN 025 Neo-Armed Dragon Infinity
WIND / Dragon / Level 12
ATK 4200 / DEF 4200
You can’t Normal Summon/Set this card. Sp. Summon only by Tributing 1 ‘Neo-Armed Dragon LV10’ you control. This monster’s ATK and DEF can’t be changed by card effects. On your Main Phase, discard 1 card to destroy all monsters your opponent controls.

Is that before or after damage calculations?

Edit: Also, pretty much none of your monsters are really all that original.

Before.

Either way, this was an old file I dug up. I made these for someone else, and I hardly care about the fact they're unoriginal.