Blazes target players within 48 blocks. If a blaze is damaged by a player or other mob, it alerts other blazes within 48 blocks to target the attacker. [JavaEditiononly] A blaze flies when it acquires a target, slowly approaching while attempting to remain from 0.5 to 3.5 blocks above the target.
Blaze can only be found in the Nether Fortress Biome, all throughout the base due to their spawner being in the fortress itself. Their spawner is commonly found in small rooms with a staircase.