Who were some heroes who let Holling Hoodhood down in the Wednesday wars?

In "The Wednesday Wars," Holling Hoodhood feels let down by several figures he initially sees as heroes. His father, Mr. Hoodhood, prioritizes his business over Holling's needs and dreams, failing to support him in crucial moments. Additionally, Mrs. Baker, while a positive influence, initially seems distant and unapproachable, causing Holling to question her loyalty. Lastly, the broader societal expectations and pressures also contribute to Holling's feelings of disappointment as he navigates adolescence.