Tank is a background character in my novel, “What the Luck?” In the novel, one of the characters mentions she had a “Heroes of the Yakuza Coloring Book” when she was young. As a goof to celebrate the release of the audiobook version of the novel, I actually created the coloring book.
If you are interested in adult coloring books, and by “adult” I just mean more complex and intricate than those aimed towards children with nothing to do with naked people, then check this one out as it is both amusing and oddly therapeutic.
The coloring book has a bio for Tank that reads as follows:
When you need an unstoppable force, you bring in the Tank. While it is true that Tank has never been a soldier, he is nevertheless constantly battling with the demons inside his head. No one has seen tank in this stance and not seen oblivion shortly thereafter.
Tank and his twin brother, Bone Crusher, always work together. It is said that they practically share a brain, and if you have ever met them, you would probably agree - although not to their faces.
Tank earned his name when he had steel plating implanted subdermally in key spots around his body, making him effectively armor-plated. It is said that he can punch through most doors in one swing, and legend has it that he once disabled a Nissan sports car by continually headbutting the engine bay until it stopped running.
If you see Tank at any point in your day, just run. His only weakness is that he is also as slow as his namesake, so you just might escape with your life.