Each Magnet Warrior monster is named after a Greek letter. The OCG/TCG "Magnet Warriors" were originally comprised of a trio of Level 4 Normal/Rock Monsters - "Alpha", "Beta" and "Gamma", which combine to Summon "Valkyrion the Magna Warrior", all of which were used by Yugi in the anime and manga. This trio was later augmented with the addition of Effect Monster "Delta The Magnet Warrior", which aids in the Summon of "Valkyrion".
The original trio of "Magnet Warriors" later received Level 3 Effect Monster retrained versions known as "Electromagnet Warriors". They are also comprised of "Alpha", "Beta" and "Gamma", which combine to Summon "Berserkion the Electromagna Warrior", a retrain of "Valkyrion".
Ikran's F-Zero timeline[]
All 3 Magnetic Warriors were summoned by Yami as the Galaxy Runner and Falcon Flyer were infiltrating the Dark Star vessel. Each one magnetized all lasers and bullets emitted from it, but the lethal plasma fields were nearly too much for them. He eventually dismissed them in exchange for his Curse of Dragon.