If you're looking for anime similar to Shinkansen Henkei Robo Shinkalion Z, you might like these titles.
Senpūji Maito is a billionaire crime fighting teenager, taking up his father's company and assets at the age of only 15. Taking control of the Might Gaine team of robots that his late father created, Senpūji and his free thinking robot teams take on the crime lords that plague Neo Tokyo City.
The Marine Express is an underwater, trans-continental train that is about to embark on its maiden voyage to Tokyo - but trouble is afoot! Aboard the train is the murderer of its creator, and private detective Ban Shunsaku is determined to track down the killer before he harms anyone else. Also aboard are the infamous Black Jack (who'd like nothing more than for Ban to pay him the five million yen he owes for services), Adam the robot, and other heroes and villains. Each has a motive for traveling the Marine Express, and each may not come out alive!
Centers on the battles between the mysterious alien enemy Dark Spinner and the secret defense unit Earth Granner over Earth Energy, the energy generated from the Earth's rotation.
In the distant future, the planets are now connected with a massive galactic railway system. The Galaxy Express 999 has crash landed on a mysterious planet. On board are The Conductor, Killian, Maetel, and Tetsuro, a ten year-old street urchin with a heart of gold. Now it’s up to the SDF Sirius Platoon to rescue them before the Herise Time Mystery—a rift in the deep axis of time and space—repeats.