The word "invincible" is employed with remarkable versatility in literature, serving as a potent emblem of strength, unyielding will, and overwhelming force. In some works it captures physical might and strategic prowess—a formidable weapon [1], an untouchable army or its generals [2, 3], even giants whose strength defies natural limits [4]—while in others it embodies moral or intellectual superiority, as seen in descriptions of an argument that cannot be refuted [5] or principles that incite revolutionary change [6]. Beyond the tangible, authors also invoke "invincible" to evoke an indefatigable spirit or destiny, whether it is the boundless courage of a child [7], the inexorable pull of fate in youth [8], or a soul overwhelmed by an all-encompassing dread [9]. Thus, across varied genres and epochs—from epic battles and mythic challenges to reflections on the human condition—"invincible" consistently resonates as a symbol of an enduring, unconquerable force.