I'm probably not the first to notice this, but I'd thought it was an interesting reference:
The "names" of the level 5 AI are based on the elements used. Each half corresponds to an element. For example, the name "Aethra" would be an Aether-Earth deck from "Aetheric" and "Terra".
List of element "names"
Aether Aeth-eric
Air Ari-es
Darkness Shad-ow
Death Mor-tis
Earth Ter-ra
Entropy Dis-cord
Fire Pyr-ofuze
Gravity Mas-sa
Life Vit-al
Light Lum-iel
Time Chr-onos
Water Aqua-rius
Note: The second half of the name corresponds to the mark.
Masal (Gravity/Life) will have 3 life marks, while Vitsa will have 3 gravity marks.
Credits to Bloodshadow for new names on Light, Time, and Fire