Spencer:

[The ability to absorb dead organisms and assimilate their traits into them] [Each death he resurrects and adapts to what killed him.]

Xian Ti:

[Cultivation] [The Library of Heaven’s Path]

Lilith:

[Vampire Physiology] [Blood Manipulation] 

Magus:

[Shadow Lordship] [Demigod Origin]

Alex:

[Every Jutsu from Naruto] [Ability to use Chakra] 

Min-Jun:

[The System from The Gamer] [Total Recall Memory]

Akihiro:

[The ability to summon servants from Fate] [The abilities of Gilgamesh]