Kevlar

Kevlar is a tier 5 tank that branches from Canoe at level 60. It is immune to effects. Ram Kevlar has the second-highest effective health of any tank in the game.

Design
Kevlar has a circular base with a grey octagonal trim. It has two Borer barrels side by side and two swarm drone spawners flanking them.

Technical
Kevlar is immune to all effects. Otherwise, it has the same stats as Canoe. Immunity may or may not give it extra effective health.

As the Kevlar

 * Ram build is recommended; bullet stats, similarly to Canoe, are low and substandard compared to other tanks, even in the entire Pelleter class.
 * Ram build has been proven by TOTMGsRock#1948 to have more effective health (when Body Damage, Max Health, Shield Regeneration, and Shield Health are optimized) than every single Smasher-type tank except Coiffure, and every sentry except the Pulsar Lite. This absurd strength is likely due to a glitched interaction with immunity mechanics and body damage. A simple max ram build (9/9/0/0/0/0/0/6/9/9) is best.
 * You can take on usually formidable bosses such as PS3_33 and AT4_BW because your debuff immunity means they are essentially just normal Guardians.
 * Following the same branch, you can quite readily fight Chiller branches as they are generally reduced to their base tank, usually being a simple Sniper or Assassin.

Against the Kevlar

 * Virtually every tank can outpenetrate Kevlar with bullet stats, but a proficient ram Kevlar player is a threat to most tanks. High DPS and knockback are useful to counter Kevlar.

Trivia

 * Kevlar is a type of durable material, most commonly known for its use in personal body armor.
 * The Kevlar was the first debuff-immune tank added to the game, followed by the Steelix.