Assassin Bear (ブラックマ Burakkuma, Black Bear) is a Black enemy that only appears in Legend Stages. His first appearance is in the Challenge Battle, where he spawns twice.
Assassin Bear is the fastest-moving and one of the fastest-attacking enemies in the game. At 100% strength magnification, he deals 3,000 damage per hit, which might not seem like much, yet he keeps himself very safe with a range of almost double that of Dark Emperor Nyandam.
This enemy is usually used as a mean to guarantee the defeat of the player by spawning in masses once a time limit is reached, sometimes preannounced by a Ms. Sign. However, this does not happen in every stage.
In stages like Merciless Onslaught, Ashen Rain and Veggie Friends, he is used as a gimmick, in which he spawns as soon as an enemy perishes, due to the enemy limit, leading into an instant defeat.
His weak point is his health: Find a way to land a hit and, unless he's heavily buffed or you are using Sniper the Recruit, that will be enough to kill him in one shot.
Strategy
The Cat Cannon can kill an Assassin Bear easily, however at higher magnifications it cannot deal enough damage, meaning a certain defeat in most cases. Thankfully, these overbuffed Assassin Bears are always easy to avoid fighting in the first place, except in Surrealist Sins if you're not careful.
Another way to beat him is to use a Cat Unit that can reach and kill the Assassin Bear without dying; options include cats with very few knockbacks and either fast speed or high health (at least against Black Enemies). The faster the speed, the lower the heath needed. Glass Cat, Express Cat, Sanada Yukimura, Stone Cat and Manic Jamiera Cat are some examples.
Using Wave Attack Cats/Surge Attack Cats works too. If the Assassin Bear comes out when the base receives enough damage, that means that he will also spawn onto a Wave or Surge and die instantly. In other scenarios, it's still possible to hit the bear by using a peon as a "stepping stone" and long enough Waves.
The last option is using a unit to clip through the Assassin Bear after being knocked back. The best choice for this would be Manic Lion Cat, as although other options can still work, they have to be ultra fast in order to instantly rebound after being knockbacked and have a fast attack rate to kill the Assassin Bear after getting knocked back.
Assassin bear from the darkness of the world. The number of assassination requests has plummeted in this recession. Offering 100 million per kill. Wrote a request in the flyers this morning.