Hydel is the second general of the Four Generals of the Black Swarm the player meets. He is chiefly concerned with justice, despite piloting a cockroach, wearing what he is wearing, and fighting for all he's got as a member of the Black Swarm. His subordinates are Akane and Minoru. He greatly respects humans as a whole, and respects the right for them to make decisions and have morals of their own, as long as they believe it is the right thing to do.
He and Dr. Gidoh share the same strange skin color and shadowed eyes, and it is very likely that Hydel is Dr. Gidoh's cousin (or some other kind of family member).
Official art of Hydel, one of the Four Generals.
His drone is a
cockroach named Jet-I. This is a not-so-subtle reference to Star Wars, and also a reference to how strange he is, how fast his drone is, presumably with the help of rocket jets, as well as his method of propelling his melee attacks. Although his drone can technically fly with these jets, there is no feature for his drone to jump over units or water.