Matsuzō Matsuno, a stout, round-eyed man with a prominent nose, buckteeth, and a curly mustache, sports closely shaved sides on his head and favors suits or casual long-sleeved attire. His design remains largely uniform across adaptations, though early flashbacks briefly depict him as younger and clean-shaven. As the father of six unruly sons, his efforts to assert authority often dissolve into futile shouting matches, his sternness undercut by a mischievous streak—evident when he deflects Osomatsu’s bids for independence with humor.

Professionally, he works as a salaryman plagued by financial instability, frequently misplacing his paycheck and triggering family crises. These incidents escalate into chaotic scrambles to recover lost funds, sometimes involving figures like Iyami, who steals the check. Before the sextuplets’ birth, he owned the Mimatsuya liquor shop but abandoned it for a higher-paying job to support his family. Later iterations reconcile his past by depicting the family home as a converted storefront, though reboots like the 2015 series place them in a different residence.

Despite frustrations, Matsuzō displays a relaxed demeanor, cheering passionately for the Chunichi Dragons baseball team. He shares exasperation with his wife, Matsuyo, over their sons’ antics, though her patience frays at his leniency. In alternate narratives casting the brothers as villains, his parenting subtly hints at roots for their chaos.

Spin-offs retain his beleaguered father persona, while early manga chapters briefly assigned the family the surname "Yamano"—later revised to "Matsuno." A live-action adaptation inaccurately renamed him "Matsutaro," likely an oversight. Recurring paycheck crises amplify his strained role as provider, juxtaposing workplace pressures with domestic turmoil. His character oscillates between comedic mishaps and weary resilience, embodying the series’ exploration of familial dysfunction.