Mr. Shu

is a tutor that Chi-Chi hires for Gohan.
==Appearance==
Mr. Shu clads himself in a traditional Chinese Kung Fu garb consisting of a bluish-purple and white tangzhuang (Chinese jacket), reddish-wine pants, black shoes, and and semi-circular glasses with yellow frames. His face and afro hairstyle both resemble Pamput, though Shu is older, wears glasses, has a lighter skin tone, and a mustache.
==Personality==
Mr. Shu appears to be a professional tutor to the parents that employ him to tutor their children as shown by his initial interactions with Chi-Chi. Behind closed doors, however, he is brutal bully who uses both verbal and physical abuse towards his pupils.
He is also under the impression that Goku is a deadbeat father who ran out on his family and despite never having met the man himself, is quick to degenerate and insult Gohan's father, showing he is quick to judge people he hasn't even met. If a student resists him like Gohan did, he is quick to play the role of victim toward the child's parents convincing them that the child's act of self-defense was an unprovoked attack on Mr. Shu. However, his arrogance causes him to foolishly use his whip on Gohan after Chi-Chi believed his story about Gohan attacking him, thus showing he can be arrogant and careless when he has the upper hand.
==Biography==
===Dragon Ball Z===
====Frieza Saga====
When Chi-Chi is not in Gohan's room, Mr. Shu spends his time whipping Gohan, insulting his work for any slight mistake, and calling Goku names. Later, Gohan has a dream where Goku returns, but it is really Frieza in disguise. Gohan attacks Frieza, but when he wakes up, he sees it is really Mr. Shu he is attacking.
Mr. Shu yells at Gohan and further insults Goku, calling him a brainless brute. When Gohan defends Goku, Mr. Shu attempts to whip him again, but Gohan effortlessly catches the whip, angrily tells Mr. Shu that his father is a good man and not a brute, and then crushes the end of the whip to powder, leading to a terrified Mr. Shu calling Chi-Chi and proceeding to tell her his end of the story, making Gohan sound like the bad guy.
After Chi-Chi chastises Gohan, Mr. Shu proceeds to state that this is due to the father's influence and ultimately pushes Chi-Chi too far when he states that Goku abandoned them, calls him worthless, and whips Gohan across the face hard enough to draw blood right in front of her. While he is laughing at his own words, an outraged Chi-Chi literally throws Mr. Shu out of the house through an open window. When he yells at her and threatens her from outside, she proceeds to jump out the window herself and chase him away, warning him never to come back.
While Mr. Shu does not appear again after this, Ox-King later told the story about how his daughter threw him out of the house, much to his amusement.
==Power==
Mr. Shu is a normal Human-type Earthling and is physically no match for trained martial artists like Gohan and his mother. He tends to bully pupils he tutors and uses physical punishment when they fail or make mistakes, indicating he is a poor teacher given that he resorts to such draconian methods. Additionally, it is suggested that most of his pupils before Gohan were normal Earthling children whom Mr. Shu abused due to being older and stronger than them as well as abusing his authority as their tutor.
However he is skilled enough to wield his whip, though the whip itself lacks the durability to withstand Gohan's immense strength. However, despite this, Mr. Shu is able to whip Gohan hard enough with what remained of the whip to draw blood, though this ends up backfiring on him as he did so in front of Chi-Chi, as while she wants Gohan to get a good education, she does not approve of Mr. Shu harming her son or badmouthing her husband to the point she physically threw him out of her house and chased him away.
==Equipment==
*Whip - Mr. Shu uses a whip to punish the students that he tutors. He uses it against Gohan, though Gohan is able to grab and crush the end of it into powder using his immense strength.
==Video Game Appearances==
*Dragon Ball Power Level Cards
*Dragon Ball Super Card Game
==Voice Actors==
*Japanese: Hirotaka Suzuoki
*Funimation dub: Chuck Huber
*Latin American Spanish dub: César Soto
*Brazilian Portuguese dub: Cássius Romero
*Greek dub: Yiannis Papaioannou
==Trivia==
*Mr. Shu's Japanese name, Sai'aku, is translated to "The Worst Teacher": Sai is written with the kanji for "disaster", aku with the kanji for "evil" and, together, sai-aku is a homonym for "the worst" (最悪). Shū (Zhou in Chinese) is an actual Chinese family name.
**Additionally, in the Brazilian Portuguese dub, Chi-Chi refers to him by the bizarre name "Senhor É-Um-Sádico" (literally "Mr. He-Is-A-Sadistic"), which alludes perfectly to his real nature - though his name has never aroused any suspicion from Chi-Chi herself before she hires him.
*Mr. Shu resembles Pamput, a fighter that entered the 22nd World Martial Arts Tournament, because they both have similar afros and have similar eyes. But Mr. Shu has a mustache while Pamput does not.
*Mr. Shu says at one point "Oh my foot is not!" which could be a pun of his name since his name is a homophone of the word "shoe".
*Before Chi-Chi throws Mr. Shu out of the window in the original Japanese version, Mr. Shu insults Gohan by saying that he is harder to teach than a "mere monkey" and that he has "no real potential". However, in the Funimation dub, he instead insults Goku calling him a "worthless father" for unknown reasons.
==Gallery==
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es:Zhou Sai'aku