REX

REX is a playable character in Risk of Rain 2. They use powerful attacks that cost HP, but heal HP from some attacks, so their HP may change rapidly while using abilities. To increase consistency and survivability, their passive helps REX deal more damage while also taking less.

Tips

 * The can be particularly effective on REX as you are able to launch it into your Tangling Growth, ensnaring a large number of enemies at once which in turn massively increases your total healing.
 * Items that trigger when you take damage (such as ) can be very effective, especially if using Seed Barrage.
 * Walking backwards, jumping, and using DIRECTIVE: Disperse at a downward angle can launch you quite a long distance in a desirable direction.
 * Using DIRECTIVE: Disperse 3 times in midair with a will push you backwards at very high speed.
 * The Afterburner reduces the cooldown enough that REX can effectively fly everywhere, although it is somewhat challenging to control.
 * Using Seed Barrage resets the attack cooldown of DIRECTIVE: Inject, allowing you to attack much faster than normal.
 * It is highly recommended that you avoid and  when playing REX as these items can replace your health with Shields, a type of health which cannot be recovered from healing. This can totally cripple REX as their abilities Tangling Growth, Seed Barrage, and Bramble Volley take a percentage of your health, but you are unable to recover any of it by using Tangling Growth, DIRECTIVE: Inject, or Bramble Volley.
 * It is highly recommended that you avoid when playing REX as at least one of your four skills will likely cost health to use, causing you to lose gold rapidly just by playing normally.
 * Natural Toxins, Tangling Growth, & DIRECTIVE: Harvest all count as debuffs, allowing REX to activate with only 2 additional debuffs as opposed to the usual 4.
 * Due to the high health-to-HP-gain ratio of Bramble Volley, it is often recommended to take it over DIRECTIVE: Disperse. In addition, Bramble Volley can be used to knock oneself back as well, and as such can be used for mobility in the same manner as DIRECTIVE: Disperse.
 * Tangling Growth's root can be used to entirely hold down areas, regain good amounts of HP, and be used to lock enemies for either a Seed Barrage, DIRECTIVE: Drill volley, or a Bramble Volley.
 * Tangling Growth can root, although it's not quite as effective as outright freezing him as.
 * Tangling Growth can slam flying enemies, and can be used to cheese the by slamming it into the central pillar at the right angle.

Trivia

 * REX is referred to internally as "Treebot."
 * The Smoothie skin used to be a light green & pink with blue flowers.