The Silver Spider, as PC

That story was originally focused on a dark elf monk, serving the interests the Elf Queen could not express.

He has a 3 point complicated relationship with the elf queen, because he's part of her forces but they do not always know it or are at liberty of showing such knowledge.

His backgrounds are probably divided between his public occupation and his secret occupation. 

Maybe secret agent sounds too modern, but elf queen's spy, ...saboteur or even ...assassin are good. The public backgrounds could be dark elf exiled mercenary, ...hunter, ...trader or ...wanderer. I would probably put 4 points on the secret one and 2 each on a couple of cover ones.

The original thought was to make him a monk, but the same relationships and background ideas could work with a rogue, sorcerer, fighter or ranger. And bards make usually good spies.

As Bard I think the Spider would be primarily a Charisma bard, with the talent Balladeer to help him blend in. Also, Spellsinger and Jack-of-Spells seem nice enough, considering the Elf Queen's status as one of the best sorceress in the world. If he was to primarily spy on a particular group (in particular, Archmage, Lich King, Priestess or Great Gold Wyrm), Mythkenner or Loremaster could help making a cover, with the two additional background points and the extra icon relationship.

As Fighter I imagine him being the quick, expeditious kind of fighter, favoring Strength and Dexterity, fighting with two longswords or maybe scimitars. The talents Comeback Strike and Counter-attack help making that image, letting him taking advantage of a foe's failed attacks and having less chances of failing his own. The third talent could be Deadeye Archer to bring in the idea of covert killer. His initial maneuvers would probably be among Carve an Opening, Deadly Assault, Precision Attack, Second Shot and Two Weapon Pressure.

As Ranger I think he's probably a good candidate for Favored Enemy: humanoid. A spider Animal Companion is drow-flavored, but he's supposed to be undercover, so I wouldn't take that one. First Strike, Lethal Hunter and Two Weapon Mastery match the assassin kind of character, while Fey Queen's Enchantments connects him with the powers of Elf Queen.

As Rogue, the talents Improved Sneak Attack or Murderous make him the assassin type, while Smooth Talk is more spy-like and Shadow-Walk links him with the darkness drow character everyone expects him to be.

As Sorcerer I would clearly take the Fey Heritage talent and probably Sorcerer's Familiar. Blood Link is interesting to let another relationship into the character and help his cover.

Finally, as Monk, the forms that most call my attention are Greeting Fist, because it seems like a good way to end a fight quick, Heaven's Arrow match the secret, stealthy and ranged style of ninja-style kunai, as Spinning Willow Tree gets him a nice projectile dodge ability and Leaf on Wind gives him the extra movement I expect from a mainly infiltration ninja kind of character.

There you go, six different characters with the same story.