Protector Casdin

Protector Henry Casdin is the leader of the Brotherhood of Steel Outcasts in the Capital Wasteland. According to Elder Owyn Lyons, he was one of the best fighters in the Capital Wasteland Brotherhood of Steel before he took other Brotherhood members and formed the Outcasts in order to continue the original mission. He trades the Lone Wanderer for technology that is acquired across the Wasteland and in return gives out useful supplies that the Outcasts' possess in abundance (see The Outcast Collection Agent).

If asked about the Outcasts, he will comment on how he fought side by side with Elder Lyon's in the scourge of the Pitt. He recalls how the Brotherhood were forced to watch after small towns instead of gathering technology. This ultimately led to the the split of the Brotherhood, and Protector Casdin becoming Outcast leader (at Least to the Outcasts of Fort Independence)

Protector Casdin can be found standing at the entrance to Fort Independence, the Brotherhood Outcasts headquarters. He holds the key to Fort Independence. The player can unlock the side quest of scavenging for technology by first speaking with Defender Morgan.

Casdin is armed with a Ripper, and will never switch to another weapon (unless you trade him the Alien Blaster). As a result, he tends to charge directly at any random enemies that wander near Fort Independence. Other than his Power Armor, Casdin's durability is strictly average, so this can get him killed.

Repeatable quest: The Outcast Collection Agent

 * Main page: The Outcast Collection Agent

You can trade some pieces of power armor, some energy weapons, sensor modules, and scrap metal to Casdin. In return he'll give you your choice of the following, in quantities according to the perceived value of the item:
 * 5.56mm ammunition
 * Frag grenades
 * Rad Away
 * Stimpaks

Once the Lone Wanderer has gained 50 "points" (see table on the quest's main page), they are told that they are considered friendly by the Outcasts. This allows for infiltration of Fort Independence without encountering the hostility of the residents (see Getting In).

If you own Outcast Power Armor before encountering Protector Casdin for the first time, he will steal it from you even if you are wearing it.

If you wish to kill him, or all of the Outcasts, first trade him anything and everything you can to him, then change the turrets firing parameters and the turret will likely kill him, or at least deplete his health enough that he flees and can be killed by a Dart Gun shot.

Appearances
only appears in Fallout 3.

Exploit
All items you give to Casdin can be recovered with pickpocketing as long as he havent equipped it (he will equip alien blaster, see above on how to recover it) so its safe to say that Casdin can provide you with MORE than enough stims, .556mm ammo,frag grenades and rad away to last you through the game. Ofcourse you can simply take tons of the .556mm ammo and just use it instead of caps.I suggest trading in the alien power cells, they give 11 stims or 250ish .556mm ammo. NOTE that its really hard to steal from him, you should get atleast 70 in sneak before you try and do it at night time.

Bugs

 * If Casdin sees you pick the lock on the door, the next time the player exits their base, he may be hostile. Killing him will cause negative Karma and hostility from the Outcasts. However if a follower is to kill Casdin without the player's intervention, there is no consequence and all items given to Casdin can be recovered. If other Outcasts such as Morgan are around while Casdin goes hostile via this condition, they too will target and kill Casdin.


 * Casdin's subtitles incorrectly refer to 5.56 ammo as ".556 ammo", along with the option for trading for it.


 * If you enter the fort before talking to him outside, he will offer 2 dialogue options and get hostile for a little bit. But if he goes outside, you can talk to him about turning in items.


 * Sometimes, when you load into the Fairfax Ruins, you will find Casdin lying dead at the bottom of the ramp leading up to the raider base.


 * Casdin doesn't accept power armor sometimes. Once he failed to register standard power armor gotten from corpse in Arlington Library. Another time he ignored Tesla Armor. It's unknown why this occurs but he has yet to ignore Mark II armor.