Against a 60 AL foe, level 26 Flesh Golems do 58-135 damage, including critical hits. The critical hit rate and specific critical and non-critical damage ranges are currently unknown. With specific spells or buffs, the flesh golem can deal heavier damages and increased critical hit rates.
Flesh Golems have roughly (Level*3.75 + 5) armor (only verified against Cold damage). The health calculation for Flesh Golems is unknown, however they are suspected to use the standard health calculation of level*20 + 80.
A level 26 Flesh Golem has roughly 103 armor (only verified against Cold damage), and is suspected to have 600 Health.
They are known to sit and pause for a moment when the Minion Master stops and take a while to catch up to the rest of the group. Sometimes while idle, they will use their bladed arm to scratch their neck/head.
Flesh Golems have a fairly high critical hit rate due to their high level.
Like all undead, Flesh Golems take double damage from Holy damage.
It is possible to animate a Flesh Golem up to level 34 with 21 Death Magic, a higher level than even end-game bosses in Hard Mode. The Flesh Golem is still much weaker than most high-level monsters, however, as it cannot use skills. (For information on how to get 21 Death Magic, see Attribute.)