My understanding of this system is that each of the 4 npcs for Most Wanted List are supposed to contain all the scrolls relevant to the "Zone" they are located in. There are some misplaced quests in the current layout.
Here is the current layout:
- Valencia -
Mt. Mjollnir Zone - (East Mt. Mjollnir, West Mt. Mjollnir, Yggdrasil Garden, Cave of Riddles)
Quests:
- Lurker Fly
- Red Robberbug
- Lloyd -
Prontera Zone - (Prontera, South Plain, Izlude Hill, Payon Forest, Forgotten Payon)
Quests:
- Wolf's Cave N/H (Adventure King Poporing, Arachnoa, Red Scar)
- Grand Peco
- Vespa
- Izlude Cave N/ H (Vador King, Penomena)
- Vador
- Virus
- Secret Forest Tomb N/H (Mau Commander Leader, Holang Mushroom, Cursed Grave Flower, Evil Phantom Fire, Sehee, Moonlight Flower)
- Illusion of Moonlight
- Izaak -
Morroc zone - (Verta Delta, Sograt Desert, Road of Bless, Morroc, Dayr Desert, Dayr 1st, 2nd, 3rd Temples, Darkwhisper Lower Floor, Darkwhisper Upper Floor)
Quests:
- Cursed Ghost Ship H (Valatie Jeff, Francis Exel, Lepar Costas, Pinonua Delicious, Lepard French, Edith Scweiz, Drake)
- Goblin Leader
- Wanderer
- RSX -0806
- Fortress of Sandarman N/H (Hudson Zerom, Flash Geylog, Gorgonzola, Dostoev, Lapparman Von Cherva, Solomian La Christ, Executioner Meister, Russil with Power of Randgris)
- Victoria -
Alberta Zone - (Maple Forest, Divided Plain, Alberta, Jawaii Love Island, Jawaii Ocean Island)
Quests:
- Zadorak
- Hodremlin
- Abandoned Lab N/H (Khiel MK-, Invincible Venom, Elder Gedenhard)
- Merem
- Scoler
- Hell of Deadly Poison N/H (Venomer, Giant Centipede, Ungoliant, Maya Purple)
- *** Stainer ***
- *** Wandering Wolf ***
- *** Cursed Ghost Ship N (Valatie Jeff, Francis Exel, Lepar Costas, Pinonua Delicious, Lepard French, Edith Scweiz, Drake) ***
- *** Sandial Queen ***
- *** Willow Worker ***
- *** Sandstorm Fortress N/H (Jaywatch, Tau Rin, Abrahim, Mustafa, Hazard, Furious Jaywatch, Assassin Elder, Eremes Guile) ***
The quests marked with *** should be moved to Izaak NPC as they are located in Morroc Zone and only Izaak NPC is placed on those maps.