Twilight Thorn

The Twilight Thorn is a Nobody that is found in Kingdom Hearts II. It is one of the bosses at Twilight Town. The Twilight Thorn is also the only boss-level Nobody that is not a member of Organization XIII; however, it does share an attack with the most powerful member of Organization XIII, Xemnas.

Kingdom Hearts II
A giant Nobody who Roxas fought at the Station of Awakening

Although it tried to capture Roxas with its thorns, it was overpowered and defeated by the strength of the Keyblade master.

Kingdom Hearts II
The Twilight Thorn is very similar to the Darkside, due to its place of appearance, size, and place in the story. Only one Twilight Thorn appears, when Roxas goes to the Station of Awakening. When Roxas senses a presence and turns around to see who it is, he sees a figure wearing a black cloak, before it transforms into the Twilight Thorn, just as in Sora's own Dive to the Heart, he turned to see a Shadow Sora which became a Darkside.

Since the player battles the Twilight Thorn as Roxas, they will not receive its journal entry until they enter the Simulated Twilight Town as Sora.

Strategy
Only attack its head, as that is the only weak point. It begins by tossing Roxas into the air to hurt him - use the Reaction Commands at the right time - Key Counter and Lunarsault in particular. Then follow up with Break Raid, when on the ground do a combo. It will get up and begin to spam Tendrils of Darkness.

Many of Twilight Thorn's attacks can be reflected.

When it fires thorns use the Reaction Command, Reversal to get close to attack. But if it continuously fires thorns, even if you are close to its head, prioritize safety. Keep on using Reversal until it is safe to attack. The Twilight Thorn has a tendency to shift its shape, and sometimes you may see it upside down. Again, it will fire thorns. Keep on using Reversal, then attack his head twice and begin avoiding again.

When on low health it will summon Creepers to fight. Avoid the Creepers and continue to attack.

As the fight with Twilight Thorn takes place at the beginning of the game and Roxas' stats are low, it is advisable to train him up to at least Level 5 and stock up more than three Potions. Use the Auto-Reload function and heal when necessary - because poor evasion of the thorns can take a toll on Roxas's health.