Fallout: New Vegas companions

Companion wheel
The companion wheel is a new feature that is added to Fallout: New Vegas. The wheel provides easier control over non-player companion characters in the game.

There are 8 sections on the wheel, each with a specified function.

The available orders are:
 * Toggle melee/ranged fighting
 * Open inventory - This displays the companion's current inventory, inventory weight, and weight limit.
 * Toggle stay close/keep distance.
 * Back up.
 * Toggle aggressive/passive AI.
 * Use stimpak.
 * Toggle wait here/follow me.
 * Return to normal dialogue.

Permanent companions
You can have up to two companions, one humanoid and one non-humanoid. All companions default weapons have unlimited ammo.

Humanoid companions

 * Arcade Gannon, a member of the Followers of the Apocalypse with a mysterious past.
 * Craig Boone, an Ex-NCR sniper with a grudge against Caesar's Legion.
 * Lily Bowen, a friendly nightkin and former member of the Master's army.
 * Raul Tejada, a ghoul mechanic and former gunslinger held hostage by Tabitha, the mad leader of the State of Utolbitha.
 * Rose of Sharon Cassidy, a caravan merchant and the daughter of John Cassidy. Also known as Cass.
 * Veronica Santangelo, a disillusioned Brotherhood Scribe.

Non-Humanoid companions

 * ED-E a prototype eyebot designed for combat and reconnaissance operations.
 * Rex, a cyberdog belonging to the King.

Temporary companions

 * Neil, a disgruntled super mutant.
 * Sunny Smiles
 * Trudi
 * Deputy Beagle
 * Private Halford