Backgrounds!

Note 1: 'Old slogan' = 'A pledge in blood is never to be broken, unless the body has spilt the last of its blood.
Note 2: 'Extended old slogan' = 'An oath sworn on blood cannot be broken, until the body has spilt the last of its blood. A knight whilst a single drop of blood flows throug his veins, must uphold an oath sworn. Therefore an oath sworn in blood is one too many for a lifetime. (old translations are bad, lol)
Note 3: Check resolution carfully, some US 1280 x 1024 are 1280 x 960 instead for some reason.

Fan Created -
1280 x 800 - Pyro's widescreen screenshot background

US/Europian Official Site -
1024 x 768 - Lineage the Blood Pledge with old slogan and Golden DK casting earthquake.
1024 x 768 - Lineage the Blood Pledge with Female (Cerenis?) speaking to 'her lord'.
1024 x 768 - Lineage the Blood Pledge with old slogan and cartoon characters.
1024 x 768 - Lineage the Blood Pledge with old slogan Long Sword (pre-dark conquest closing screen).
1024 x 768 - Lineage the Blood Pledge with old slogan and Mage facing away w/outstreached staff.
1024 x 768 - Lineage the Blood Pledge with old slogan, female casting and speaking to royal.
800 x 600 - 1024 x 768 - 1280 x 1024 - Astagio on bottom left facing volcano.
800 x 600 - 1024 x 768 - 1280 x 1024 - Astagio on bottom right facing volcano.
1024 x 768 - 1280 x 960 - Lineage cartoon characters.
800 x 600 - 1024 x 768 - 1280 x 1024 - Lindivor flying from burning castle.
800 x 600 - 1024 x 768 - 1280 x 1024 - Lindivor flying from burning castle with black bars on top/bottom.
800 x 600 - 1024 x 768 - 1280 x 1024 - Lindivor's head.
800 x 600 - 1024 x 768 - 1280 x 1024 - Valakas Stencil.
800 x 600 - 1024 x 768 - 1280 x 1024 - Valakas in front of volcano.
800 x 600 - 1024 x 768 - 1280 x 1024 - Lindivor, Dire Wolf, Cimera in middle with blackbars on side with lineage writen in it.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with 'Lord British' (don't ask me)
1024 x 768 - 1280 x 960 - Male elf sitting
1024 x 768 - 1280 x 1024 - Female Dark Elf, Male and Female Knight.
800 x 600 - 1280 x 1024 - 1600 x 1200 - Blue hand casting.
800 x 600 - 1024 x 768 - 1280 x 1024 - 1600 x 1200 - Blue female eyes (Ice Queen.)
800 x 600 - 1024 x 768 - 1280 x 1024 - 1600 x 1200 - Snow Tiger face stencil.

Japanese Official Site -
1024 x 768 - 1280 x 1024 - 1600 x 1200 - Episode Re background w/all classes.
1024 x 768 - 1280 x 1024 - 1600 x 1200 - Episode Re background Royal.
1024 x 768 - 1280 x 1024 - 1600 x 1200 - Episode Re background Dark Elf.
1024 x 768 - 1280 x 1024 - 1600 x 1200 - Episode Re background Elf.
1024 x 768 - 1280 x 1024 - 1600 x 1200 - Episode Re background Knight.
1024 x 768 - 1280 x 1024 - 1600 x 1200 - Episode Re background Mage.
800 x 600 - 1024 x 768 - Episode 6 Male Knight front DE, Mage background.
800 x 600 - 1024 x 768 - Episode 5 Dark Elf / Baranka back to back.
800 x 600 - 1024 x 768 - Episode 4 Female Elf front, Dark Elf, Knight, Mage in background.
800 x 600 - 1024 x 768 - Episode 3 Baranka in front of map of Diad Fortress/caves.
800 x 600 - 1024 x 768 - Episode 3 Female Dark Elf.
800 x 600 - 1024 x 768 - Episode 3 Knight (movements in background).
800 x 600 - 1024 x 768 - Episode 3 Male DE in fround of map of Lastabard.
800 x 600 - 1024 x 768 - Episode 3 Life and Death.
800 x 600 - 1024 x 768 - Female Royal front, Male Mage/Male Knight behind her, Female Elf/Male Royal behind them.
800 x 600 - 1024 x 768 - Male and Female Dark Elf.
800 x 600 - 1280 x 1024 - Episode 3 Baranka front battleground in background.
800 x 600 - 1280 x 1024 - Episode 3 Baranka frount Dark Elf background.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with Golden Death Knight.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with old slogan and Anthras.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with old slogan and Death Knight/Death Knight Horse with Lizardmen in background.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with old slogan, Gryphons and Boat.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with old slogan, Demon, Lizardmen and half a face.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with old slogan and Female Mage w/translucent cloths.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with extended old slogan and underwater monsters.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with extended old slogan and Fafuron w/ Troglodyte.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with extended old slogan and Sea Dancer, Heine Guard and Crustatian.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with extended old slogan and Heine Guard, Crabman, Troglodyte and Fafurons head in the background.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with extended old slogan and Heine Guard, Crabman and Ramia.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with extended old slogan, Sea Dancer in front and Heine Guard and Fafuron in background.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with extended old slogan and Heine Guard and Fafuron.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with Fafuron, Ratman and Turtle Dragon.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with Eye and battlefield.
800 x 600 - 1024 x 768 - Lineage the Blood Pledge with Warrior over battlefield in background.