Bertrum takes the form of a huge octopus ride. He has four mechanical arms, with at least three carts per arm and four bolts (two per side) supporting his arms. The middle is in the decorative fashion of a carousel with his face, shouting, visible in the mid-section of the attraction. The arms, base, and top of the ride are covered in theme park lights. Have a face having a mustache and has a big head.
Inside the ride is Bertrum "himself", appearing as a giant, disembodied, and a slightly deformed human head with a large triangular nose, a paintbrush mustache, some scruff for a beard, bushy eyebrows, jet-black "hair" and bulged eyes with yellow irises staring in a dazed expression. There is ink oozing from the left side of his mouth, acting as either blood or saliva. He also has "veins" on his right eyebrow and on the left side of his forehead. He also has bumps on the left side of his head, near his ear. He also has a small bald patch on the top of his head. No matter where Henry faces, Bertrum will always be facing towards him.
Behavior[]
Bertrum only becomes hostile at the conclusion of his second, and final audio log, with his face being revealed by two panels in the middle opening.
At the start of the fight, he will swing his arms rapidly both clockwise and counterclockwise, while slamming at least two of his arms down in an attempt to strike Henry. The first time he slams his arms, he slams the table with his audio log causing the audio log and the table to be destroyed while in the process, revealing an axe that can be used to defeat Bertrum. After a certain amount of time, he will charge up a hard slam with at least two of his arms, before pausing in order to recharge.
Bertrum defeated.
Strategy[]
To defeat Bertrum, Henry must go to the table where the audio log was to find the axe and avoid Bertrum's swinging arms by hugging close to the edges. There is a Bendy statue in the boss-fight room, so the player can't leave until he is defeated. Once Henry finds the axe, he must wait for Bertrum to do his slam attack and then strike at the bolts on whichever arms he chooses. Henry has only a brief moment to strike these bolts, but with careful timing, he can hit at least two at a time. Once he eliminates all four bolts on one arm, that arm breaks off. Bertrum becomes more hostile and gets faster each time he loses an arm. Henry must destroy all four arms in order to defeat Bertrum.
Alternatively, Henry can use empty Bacon Soup cans (discovered later on after pulling the second power switch) to fight Bertrum, however, it can be quite difficult to aim the bolts correctly without wasting any. When the boss battle begins, it is recommended not to pick up the axe while carrying the empty bacon soup cans, otherwise, it will immediately cause all empty bacon soup cans to drop, aborting a chance to trigger a later secret.
Also, when Bertrum slams down his arms, Henry can ride in the cars by pressing E. This can be used for Henry's advantage when fighting Bertrum.
In Chapter 4: Colossal Wonders, he is located in the Attraction Storage room connected to Storage 9. Henry plays Bertrum's second last tape player on the table ahead from Bertrum's monster form. While Bertrum's tape log wrapping up his speech, his own monster form slowly activates and finally begins to attack Henry for a boss fight. During the battle, Henry manages to kill Bertrum by hitting all bolts from all four arm cranes with the axe to destroy them, causing Bertrum to deactivate again and is overall destroyed. Henry can now activate the switch to power up the Haunted House.
While he never made any physical appearance, Bertrum's ride body is seen in a few times in Joey's sketches found in his apartment; with one picture showing the Butcher Gang enemies riding in one of his seats, and the other picture showing Ink Bendy coming out Bertrum's ride body where his face should be.
Bertrum is located in Wilson's prison, locked in a storage room. Only his head and a few ride parts are present, in which he appears to have been wounded with an eye missing and a few scars over his face. He was locked up by Wilson due to being considered a threat to his plans. Whenever Audrey would move, which depends, Bertrum's right eye will follow her.
Trivia[]
Bertrum's ride body design is strongly modeled after a real-life amusement park ride; the Energy Storm. Even though, all ride seats connecting to the arm cranes rather resembles a mixture between roller coaster carts and carousel chariots.
In Bendy and the Ink Machine, as seen from Bertrum's head texture map file, there is no detail on Bertrum's left ear. Either it was an oversight or time constrain during development. However, from Pascal's video where he introduces Bertrum's head model turnaround preview, Bertrum still appears to have a texture for his other left ear.[1][2]
From Bertrum's ride body texture map, there is what seems to be an earlier version of Bertrum's face lacking shades that were located from the bottom left of the file. However, because there is already a separate texture map for Bertrum's head, this face part from his body texture map file is completely unused.
In the concept art, it appears that Bertrum's ride body would have been more disheveled than in its final appearance. For example, Bertrum's head would have been more exposed due to the panels exposing his face being partially busted open, most likely due to the fact that his head was there. His carts would have been inkier and dented, and several places on his body would have been cracked and splattered with ink.
It's possible to get Henry riding on Bertrum's arms. Doing so will unlock the “Going to be Sick” achievement. However, this can happen only one time, and once the achievement is unlocked, Henry cannot ride on Bertrum's carts again later after starting a new game.
In Bendy and the Ink Machine, if approaching close enough to either one of Bertrum's crane arms while in his deactivated state, Henry will receive minimal damage.
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