Making A Multi Mob Mob

Only way to properly do something like this is to custom code it yourself. Plugins wont get you far enough to make a chain entity

What you CAN try is: 

• Make sure your body entities follow the parent and make sure that is the ONLY AI task
• Create a global chain variable that counts down each entity/body segment that spawned
• When the head spawns, it sets the global chain variable to however long you want your entity to be -1
  • If you want your entity to be 5 segments long, set it to 4 to account for the head
• When the head spawns, you need the following
  • If global chain variable is > 0 spawn another body segment with the parent set to the current segment then set the global variable to current variable - 1
  • Ensure your body segments ONLY use the Follow Parent AI Task and make sure it's speed is equal to the head's speed for the body segment entities
• If you have a tail segment, set that to spawn at 1 and add no additional spawning features for the tail.
• Potential issues
  • Due to making this with procedures, you will have numerous issued
  • Health Issue
    • If you wish for your entity to share it's health across all child/parent entities to have the same health, you will need to code this in
    • All segment entities health will be individual unless you find a way with procedures to set the health for all entities
      • Find a way to set all entities parents to the Head segment and direct all damage to the head then set the health of all segments to it's parents health
  • Segment Separation
    • Use Owner instead of Parent for following to better define how close the entity needs to follow its owner
    • If this doesn't work, or if that is not possible with the plugins you use, then you will have no choice but to code all of this yourself.
      
       

Not sure if you still need help on this but you can use set location of the segments to the head after a certain tick.

As for making the body segments facing the same as the head. Use ray tracing.