Manganese is a strong element that helps with muscle growth. It is a trace element in many vegetables and plants often consumed by herbivores in their food, and Carnivora from the herbivores they eat. Rhinoceros is a animal renouned for its strength and it’s rather brustish way of keeping itself safe using its brute strength and it’s hard horn. Much like the behavior of manganese if it’s misused.
Iron is one of the most important and used elements in the world. Used in most large construction projects, transport projects and in many household items. It wide use and strength led me to draw it as mouse. Mice are a very widely spread animal, on every continent (except Antarctica). They have the ability too breed very quickly and eat everything in sight in the right conditions. Their strength in numbers makes up for their small size and are very worthy of being the representative of iron.