Berserker

The Berserker is a Nobody enemy in Kingdom Hearts II and first appears in Twilight Town when Sora attempts to meet Kairi.

The Berserker is very bulky and wields giant claymore-like weapons (much like their master Saïx) which it uses to attack and defend. It is the biggest of the lesser Nobodies, and is very powerful. Berserkers are controlled by Saïx, with whom they bear a resemblance in various ways.

Journal Entry
''A berserker. A high-ranking Nobody. Its attacks are hard to read as it is dragged around by a cursed hammer.''

''Attacks from the front will only be parried by its hammer. Knock it down to make it let go of the hammer. Then pick up the hammer to unleash a flurry of attacks with Berserk.''

Anatomy
It seems to wear heavy armor that covers its body. Unlike other Nobodies, it does not have silver on it, but instead has bronze-like coloring. Its arms and legs are small at near the torso and hips, but the hands and feet are gigantic. Due to its armor, the only parts that can be seen of its "skin" are the hands and part of the neck/face, which are ink-black. When using a special attack (which is like the "Berserk" reaction command), it becomes small in size, hanging from its claymore-like weapons with its small hands.

Strategy
The Berserker has very strong attacks and has an equally strong defense. Moving in for a head-on attack can be risky. A good way to deal with them is to come in close, reflect its attacks, and wait for the reaction command to show up. Using it will greatly diminish the Berserker's health as well as any other enemies that you capture with it. A good alternative is using Thunder or Blizzard at a distance to help preserve HP or using Magnet followed by a limit or Thunder to finish the job.