Also known as: マイクロン伝説
The first Transformers series in the Unicron Trilogy. It introduced the concept of Minicons to the franchise and was followed by Transformers: Energon.
The Japanese title is Transformers Micron Densetsu.
In Transformers Legacy (toyline), Armada is known to be Armada Universe (アルマダユニバース in Japan) and is still a part of the Unicron Trilogy.