"Run for cover! Abandon positions!"
―Lance / Anna, Epic Battle Fantasy 4

Armored Oak is an optional boss encountered in Epic Battle Fantasy 4. He's a stronger version of Mighty Oak and is fought on Battle Mountain — as such, he is exclusive to the Steam release of the game and the post-Battle Mountain update version of the Premium Pack.


Armored Oak's appearance is based on Mighty Oak's, but has many significant differences. Noticeable differences is that his head is now mostly made of metal, his eyes are now green bionic eyes, his shoulders are now more metallic and have a strap on them, his right hand now has a massive spike on the top of it, and his left (shield) hand has been replaced with a cannon with a strap on it. The cannon is often used as a melee weapon.


Armored Oak uses three types of attacks; physical non-elemental, physical Earth and magical Bomb attacks. Virtually all of his attacks can Stagger, and he has quite a few area-of-effect attacks.

In terms of resistances, Armored Oak has resistance to half of the elements in the game (like most bosses do), though he also has a massive weakness to Poison, among smaller ones to Dark and Earth. Besides typical boss status immunities, he is weak to Tired and Poison, and most means of inflicting those will hit an elemental weakness.

Interestingly, the boss and his minions will always be at one level less than the party's average level; this includes both the original fight and the first wave of the Mega Boss Rush. This is the only case of something on Battle Mountain forced below the average level.

Defeating Armored Oak on Epic difficulty will reward the player with the Trees Go To War medal.


Icon bestiary ebf4 armored oak Armored Oak EBF4
A stronger version of Mighty Oak. Uses mostly Bomb and staggering attacks. Summons Steel and Copper Fish.
Stat HP Stat Attack Stat Defence Stat Magic Stat Mdef Stat Accuracy Stat Evade Exp AP SP Gold Hit2HP
4800 8.8 4 8.8 4 4 4 180 33 33 350 6
Element Fire Element Thunder Element Ice Element Earth Element Poison Element Bomb Element Wind Element Water Element Holy Element Dark
50% 50% 50% -50% -100% - 50% 50% - -50%
Status Burn Status Stun Status Freeze Status Tired Status Poison Status Dispel Status Stagger Status Syphon Status Wet Status Weaken Status Curse Status Death
100% 100% 100% -100% -100% - - 100% - - - 100%
StatDown Attack StatDown Magic StatDown Defence StatDown Mdef StatDown Accuracy StatDown Evade
50% 50% 50% 50% 50% 50%
Item Drop Rate
Icon Item Soft Wood Item Steel Plate Item Chain Link Item Titanium - - -
Name Soft Wood Steel Plate Chain Link Titanium - - -
Chance 100% 100% 100% 100% - - -
Status Damage
Damage taken from status effects, in % of maximum health (per turn), including elemental resistances:
Status Burn Burn Status Poison Poison Status Doom Doom
(if Death fails)
Status Regen Regen
Immune 0.72% per stack,
up to 6.48%
Immune -4%
Final damage is randomized by ±5% (except for Doom) and rounded down.

Attacks and Abilities

Attack List
Attack Target Power Type Element Status Effect Acc Crit RdF
Cannon Bash Single 70 Stat Attack ---- 100% -- Status Stagger 100% 10% 10%
Cannon Bash x2 Single 120/2 Stat Attack ---- 33% -- Status Stagger 100% 10% 10%
Arm Shot All 40 Stat Attack ---- 33% -- Status Stagger 100% 10% 10%
Arm Shot x2 All 70/2 Stat Attack ---- 33% -- Status Stagger 100% 10% 10%
Ground Pound All 50 Stat Attack 50% Element Earth 20% -- Status Stagger 90% 10% 20%
Notes: On Hard and Epic difficulties, is immediately followed by casting Lumber on a random player.
Lumber Single 80/3 Stat Attack 50% Element Earth 16% -- Status Stagger 100% 20% 10%
Notes: Is used only in conjunction with Ground Pound.
Cataclysm Single 75 Stat Attack 50% Element Earth -- -- -- 100% 30% 10%
Big Blast All 40 Stat Magic 100% Element Bomb 20% -- Status Stagger 100% 10% 10%
Artillery Random 420/10 Stat Magic 100% Element Bomb 20% -- Status Stagger 100% 10% 10%
"Have you ever accidentally swallowed a whole artillery battery? I think he has."
―Lance / Matt, Epic Battle Fantasy 4

Battle logic

The following describes general logic of the enemy and attack patterns, with chances of each attack to be used. Conditions are listed from highest to lowest priority unless specified otherwise.

  • Every 3rd turn started with less than two allies → Passively summons either a Copper Fish or a Steel Fish.
  • Berserked → Arm Shot x2;
  • ≥65% HP → Cannon Bash (1/5), Cannon Bash x2 (1/5), Arm Shot (1/5), Cataclysm (1/5), Big Blast (1/5);
  • <65% to ≥32% HP → Cannon Bash x2 (1/7), Arm Shot (1/7), Arm Shot x2 (1/7), Cataclysm (1/7), Ground Pound (1/7), Big Blast (1/7), Artillery (1/7);
  • <32% HP → Arm Shot x2 (1/4), Ground Pound (1/4), Big Blast (1/4), Artillery (1/4). Passively summons a Wooden Idol every turn, with lower priority than the "every 3rd turn" ability.

Can't have more than 2 helpers at the same time.


Notice: On higher difficulties, enemy damage spikes when they reach level 33, up to twice the expected damage (see here for more info). As Battle Mountain's battles scale to party's average level, keep your party under level 33 to make Battle Mountain-related medals easier during the first playthrough.

Armored Oak is one of the easiest fights in Battle Mountain when prepared, but will still hit like a tree and often Stagger his targets for guaranteed crits — and his most powerful attacks are multi-hit, immediately making use of the status. While Armored Oak does use mostly non-elemental attacks, Bomb resistance will end up being crucial: his strongest attack is a mighty 10-shot randomly-targetting Bomb attack, which is effectively a slightly weaker version of Akron's Multi-Cannon (on a foe with much higher offensive stats) from Epic Battle Fantasy 3, boasting a horrific 420 total power. Without resistance, the boss can cleave any party in two.

In short, equipment should focus on Bomb and Stagger resistance (which often come as a pair), as well as general physical defence. For magical attacks, Bomb immunity is enough.

Generally speaking, Armored Oak's helpers are not that much of a threat, but the "final attack" from the Steel Fish and the Copper Fish can catch new players off guard; fortunately, it is also fully Bomb-elemental, meaning no new resistances are needed. If he summons a Wooden Idol, consider leaving it there to eat up foe slots, as it's weaker and has less status effects in use than Fishes.

In terms of attacking Armored Oak, one has a few options. The boss is extremely vulnerable to Poison and Tired, giving the player an easy way to wear him out. In particular, Gaia Bloom, Poison Gas, Toxic and Vines are quite effective at spreading statuses. Dark is also quite effective at dealing damage, so Antimatter and Pulse will probably be the most powerful magical attacks the player can use. Acid would've been extremely strong, but unfortunately isn't available at the time the boss is first fought.

Community content is available under CC-BY-SA unless otherwise noted.