Theory:Abilities by classical element/Earth

Earth: Manipulations and/or enhancements of one's own body

Abilities	Arguments
Alejandro's ability	+ Renders the user's body immune to the effects of poison emission.
Empathic mimicry	+ This ability requires Earth to alter genes to use a stored ability. Use also requires Air to absorb a new ability, and potentially any of the four elements when replicating the stored ability.
Enhanced hearing	+ Enhances the sense of hearing, enabling the user to hear fainter sounds than they would otherwise.
Enhanced memory	+ Enhances the memory capacity of the user.
Enhanced speed	+ Enables the user to move at faster speeds than normal.
Invisibility	+ May alter one's own body and thus be Earth. - May instead involve projection and thus be Air, or alter perception and thus be Water.
Phasing	+ Enables the user's body to pass through objects, potentially by shifting the user's body into another dimension. - May accomplish this instead by altering the other atoms/molecules themselves or shifting them to another dimension.
Poison emission	+ Renders the user immune to a very deadly poison or enables the body of the user to create the poison.
Regeneration	+ Enables the user's body to heal itself at a faster rate than normal.
Replication	+ Replicants emerge from, an thus are created by, the user's body.
Super strength	+ Enhances the amount of physical force that can be applied by the user.
Water mimicry	+ Enables the user to turn his body into water or a similar substance.