Seong Mi-na

How Seong Mi-na joined the Tourney
Before Super Smash Bros. was released for the Nintendo 64, Seong Mi-na saw a student of her father, Hong Yun-seong, angry after being rejected by Hwang when he challenged him to a battle. She felt sorry for the brooding young man and handed him a Seong family heirloom, the dao 'White Storm' that, according to legend, possessed the ability to reflect the innermost thoughts of those who wielded the blade. That night, Yun-seong had packed his belongings and run away from the dojo in pursuit of Soul Edge, taking the dao with him. Since Mi-na had lent the heirloom to him, she felt obligated to retrieve it, and decided to leave the dojang to find him. Seong Han-myeong did not want her to go, but he knew in his heart that if he protested, she would simply run away again, and he gave her his blessing to retrieve the weapon. By the time he considered that she would, in fact, try to seek and retrieve the Soul Edge on her journey, the Smash Bros. Tourney was announced, and she signed up.

How to Unlock
The player mush complete one of the following requirements to unlock Seong Mi-na: For both of these options, the player must brawl Seong Mi-na on the Battlefield stage. After defeating Seong Mi-na, the announcer will say "Someone else has joined the Tourney!" after a Smash Ball appears on the lower-right corner of the screen with a message saying "You can now use Yun-seong's best friend, Seong Mi-na.". You will then see her to the left of King K. Rool, to the right of Cortex, above Crunch, and below Coco on the Character Select Screen.
 * Play 461 matches in the Versus Mode.
 * Complete Break the Targets Level 2 for the first time.

Spinning Divide (Neutral)
Seong Mi-na spins around one time and slashes her opponent with Scarlet Thunder.

Zanbatou Smackdown (Side)
Seong Mi-na stabs her opponent six times very quickly.

Scarlet Thunder Grappler (Up)
Scarlet Thunder extends itself so Seong Mi-na can recover.

Earth Smash (Down)
Seong Mi-na smashes the ground with Scarlet Thunder and creates a shockwave.

Seong's Crushing Long Blade (Hyper Smash)
Seong Mi-na jumps onto Scarlet Thunder while saying "Good BYE!" before slamming Scarlet Thunder onto the ground while saying "END OF THE LINE!".

Seong's Blazing Heaven's Wheel (Final Smash)
Seong Mi-na says "FELL FOR IT!", then she throws her opponent into the air using Scarlet Thunder, twirls them up high with flames then throws them back down with the words "END OF THE LINE!" and pushes her weapon through her opponent's heart as she says "NO MERCY!", dealing approximately 150% damage to her opponent.

Victory Animations

 * Standard #1: Seong Mi-na yawns, sits down, and says "That's what you get for not payi--", only to have fallen asleep before she has finished her speech. She can also be heard snoring.
 * Standard #2: Seong Mi-na is enjoying her time being waist deep in a sand pit as she says "I really like to sink!" while playing in the sand. She sinks to her chest after her speech and says "I wish I could play more in here!" while she is still playing in the sand.
 * Standard #3: Seong Mi-na yawns, falls to the ground, and says "I'm waiting for some kind of response he-", only to have fallen asleep before she has finished her speech. She can also be heard snoring.

Trivia

 * Seong Mi-na's English voice is provided by Molly Lin.
 * Seong Mi-na's Japanese voice is provided by Sanae Kobayashi.
 * Since Yun-seong isn't found anywhere in the game, M.O.D.O.K. will be Seong Mi-na's rival