Serena Thoughtripper [Female Rogue Hero]

[Shadow Era]

Credit goes to Fry.

[Laura]

Name: Laura Darkblade
Ability: Laura Darkblade always dodge the first source of damage that targets her every turn
Flavor Text: "Match my Reflexes if you dare, I am Laura Darkblade!"

[FLYING PIGGY]

Name: Ayane Unborn Snatcher ( or just Ayane)

Ability:[3]:target opponent skips their next draw phase
OR
[4]: target opponent skips their next draw phase, draw a card

Flavor Text: "You'll miss the next sunrise."

[Orca]

Name: Sonya Bloodbath
Ability: Cost: all shadow energy Effect: Target receives damage equals half of your shadow energy.
Flavor: Don't kill us, they said.

[Martin JF]

Name: Olivia Darkstriker
Ability: (2/3) Target's ability is ignored for 2 turns
Flavor: Beware of the darkness

[Reshiram99]

Name: Julia Stealthon
Ability: [3] Destroy target resource.
Flavor Text: "Her daggers are stained with the blood of enemies."

[Reshiram99]

I originally was going to post my entry's name as Olivia, but then I saw Martin JF had already taken it lol

[Brainwashcitizens]

Name: Umbra Shadow Stalker
Ability: 2: Umbra deals 3 damage to target
Flavour text: "Beware of your own shadow"

[ViTTiE]

Name: Tina Masamune
Ability 2: Tina may attack twice before being exhausted.
Text: My blade is your dead.

[Yuriko]

Name: yuriko stealthingale
Ability: yuriko stealthingale has +2 damage when defending and deals damage to attacking enemy first
Flavor Text: she may look weak, but she is quicker then you think