Killian Fangbattle is a young orc woman who worked for the Bureau of Balance. She was one of their star Regulators and worked in a squad with her (now) wife Carey and NO-3113. Though often at the end of her rope with how stone-cold dumb the main party is, she is thoroughly impressed with the magnitude of feats they manage to accomplish.
Here There Be Gerblins
Killian first encountered the main party in Wave Echo Cave while in pursuit of Magic Brian. After being startled by their presence, she animated a nearby rock-grinder to attack Magnus, Merle and Taako, then left in pursuit of Magic Brian. She was quickly disarmed and webbed by Bryan the Spider, and called out for help. The main party came to her aid and defeated Magic Brian, then allied with her after Gundren Rockseeker donned the Phoenix Fire Gauntlet and left Wave Echo Cave to begin a swath of destruction.
Together they pursued Gundren to Phandalin, though ultimately they could save neither. Killian's quick thinking to jump down a well saved the party from immolation, at the cost of nearly killing her in the impact. Merle revived her, upon which she expressed surprise that the party had resisted the sway of the gauntlet. Due to their immunity to its thrall, she brought them to the secret moon base of the Bureau of Balance to begin the process of induction to the order.
The Crystal Kingdom
Killian is, along with Carey and Boyland, part of the team of Regulators sent to the Floating Lab to arrest Lucas Miller for his misuse of confidential information in regards to the Philosopher's Stone. Killian is ultimately forced to evacuate from the compound when a crack appears in the helmet of her protective Null Suit.
Lunar Interlude IV
Killian is seen going on a date with Carey in the Chug N Squeeze.
Lunar Interlude V
After receiving the news of Magnus' supposed death, she does her best to comfort Carey. Later on, they fight The Hunger together when it invades the Bureau of Balance.
Powers and Abilities
Killian is very, very strong, and very, very good at her job. She has no known abilities and often works through using her magical items and quick wit.
- Crossbow - Fires bolts the size of small spears. Possibly named "Billips" 
- Button Device - Animates machinery
- Bracer of Balance
- Carey's heart.
- Feather Duster - A tap from this device casts Slow Fall. Taken by Taako.
- Killian is in a romantic relationship with Carey Fangbattle, and they are married as of episode 69 (nice)
- Killian loves ducks
- Killian is named after Killian Czuba (@killianczuba on Twitter)
References and Footnotes
- Quick goof in Ep. 6: Here There Be Gerblins - Chapter Six