Mr. Bolhofner (Modern)

Mr. Bolhofner is a minor character (recurring antagonist as of Season 5-turned-supporting character as of season 6) of the 2016 Nickelodeon series, The Loud House. He is a math teacher at Royal Woods Middle School in "Middle Men" and "Hero Today, Gone Tomorrow", and is Lincoln and Chandler's homeroom teacher starting from "Schooled!" due to Principal Ramirez doesn't work out for Lincoln to assigned to Mrs. Salter's class with his friends because there's no room left.

While he was tolerable in the two season 3 episodes, "Middle Men" and "Hero Today, Gone Tomorrow", he underwent flanderization beginning in season 5.

Why He's A Filthy Cruel Teacher Who Got Schooled Now

 * 1) Originally during the two season 3 episodes he appeared in ("Middle Men" and "Hero Today, Gone Tomorrow"), he was a clean and hygienic teacher who was strict but fair towards his students who taught in a classroom. However, when he became a sixth grade teacher and a true villain in season 5, he was flanderized to become a filthy slob of a rude teacher who talks down to his students and teaches in a rundown trailer outside the school (in the Season 5 premiere episode "Schooled!") for some unexplained reason.
 * 2) He is now very sadistic as he punishes his students over something so trivial.
 * 3) He is now very mean-spirited towards Lincoln and his friends especially for some unexplained reason.
 * 4) He was at his absolute worst in "Schooled!" (the episode where his flanderization began) where he punishes Lincoln for things that weren't his fault and doesn't even let him explain himself.
 * 5) *He made Lincoln have lunch with him for "disrupting his class" when actually Lincoln was telling Chandler to stop kicking the back of his seat.
 * 6) *He sent Lincoln to the principal's office for being late to class, even though Lynn made him late by shoving him in a locker.
 * 7) He is now shown to be very petty for in a couple of episodes:
 * 8) *In "Kernel of Truth" he sued the middle school because Stella guessed his age wrong.
 * 9) *In "No Bus, No Fuss" when Lincoln's mom Rita accidentally cuts him off at the school parking lot, later he takes out his anger at Vanzilla by shoving it out of the way and cuts in front of Lincoln and his friends in line at the cafeteria as revenge.

Redeeming Qualities

 * 1) He was a much more tolerable character in the season three episodes "Middle Men" and "Hero Today, Gone Tomorrow". James Arnold Taylor also still does an awesome job voicing him.
 * 2) In the episode "Rumor Has It", it is implied that part of the reason why he's like this now is because of rumors people spread about him at Royal Woods Middle School, showing that he is not completely heartless.
 * 3) *"For Sale by Loner" also implies another part of the reason why he's like this now is because of the fact that he now lives in the cabin.
 * 4) He is more tolerable in "Flying Solo", "Rumor Has It", "For Sale by Loner", "Frame on You", "Musical Chairs", "All the Rage", "Sofa, So Good", and "Driver's Dread".
 * 5) He sometimes acts nice to his students, even after his flanderazation, like "Schooled!", "Rumor Has It".
 * 6) Depending on your view, he has became a bit more likable in Season 6, as he isn't as mean-spirited and sadisitic here, similar to Lincoln Loud improving himself in Season 5 before returning back to his original persona in Season 6 and Leni Loud improving herself a bit in Season 6.