Sidekick (3.5e Feat)
From D&D Wiki
You have a sidekick/combat butler/servant etc.
Prerequisite: Character level 5th
Benefit: You gain a sidekick a creature with a ECL (or CR) equal to your ECL or CR -4. This sidekick do not again experience, act during your initiative but is otherwise as a cohort.
Normal: You have no sidekick.
Special: This feat was meant to be a more balanced version of leadership.