TV-Series
Description
Crossword Arno, also known as Dr. Crossword Arno, is a supporting character in the Inazuma Eleven GO 2: Chrono Stone anime. He is a scientist with expertise in space-time theory, credited with discovering the method for traveling through wormholes and advocating theories related to multiple timelines. His extensive knowledge positions him as a technical expert on the mechanics behind the series' time travel elements.

In appearance, Arno is a senior man with cream or light blonde hair that is thinning and balding in the middle, styled to about ear length. He has thick eyebrows and a matching thick mustache, with yellow eyes. Notably, he wears a device over his left eye and is typically seen in a white and blue lab coat over dark clothing and blue and white shoes.

Dr. Arno first appears in the fifth episode, where he explains the concepts of parallel worlds and time travel to the Raimon team. His initial explanations are complex and difficult for most members to understand, with only the science fiction enthusiast Akane Yamana able to follow and simplify his words. He quickly becomes an integral ally, providing the team with the Inazuma TM Caravan, a vehicle equipped for time travel, and later guiding them on a device that can free Endou Daisuke from his Chrono Stone imprisonment.

His personality is that of an eccentric and brilliant inventor, wholly absorbed in his research. He has a habit of appearing and disappearing unexpectedly, often in crucial moments to provide necessary information or a means of escape. Despite his abstract way of speaking, his motivations are consistently aligned with helping the Raimon team and resolving the larger temporal crises they face. He is dedicated to finding a cure for the Chrono Stone condition afflicting Endou Daisuke and plays a key role in countering the plans of the main antagonists.

Throughout the story, Arno serves as a technical advisor and problem-solver. He helps the team understand the barriers they face during their missions. For example, he explains that Shindou Takuto cannot initially achieve Mixi Max with the powerful historical figure Oda Nobunaga because their energy levels are too different, advising that Shindou must train to become stronger first. He also clarifies that traveling to a fictional world, such as the era of King Arthur, is fundamentally different from standard time travel and requires a specific artifact, which leads the team to find King Arthurs crown. Later, he uses a herd of dinosaurs to help Raimon avoid brainwashing during a critical moment in the Jurassic period.

Dr. Arnos key relationships are primarily professional and cooperative. He works alongside Wonderbot and interacts directly with the Raimon members, particularly captain Tenma Matsukaze and Fei Rune. He demonstrates a deep understanding of Feis personal situation and identity, as well as the true motives and nature of the main antagonist, SARU. It is revealed that Arno was aware of SARU's plans from the beginning but chose to follow them in order to help Fei discover his own path.

In terms of development, Dr. Arno largely serves as a static but increasingly essential figure whose true level of knowledge becomes more apparent as the series progresses. He successfully accomplishes his primary scientific goal toward the end of the story, when he finally manages to free Endou Daisuke from his Chrono Stone using his specially designed machine. His notable abilities are not athletic, as he is a scientist rather than a soccer player. Instead, his talents lie entirely in his vast intellect: he is an expert in temporal physics, the inventor of wormhole travel methods, and the creator of various essential devices, including the time-traveling caravan and the machine capable of reversing Chrono Stone crystallization.