Greed

Historians who had been allowed access to the "Monster Vaults" of the databanks in the Doctor's TARDIS observed that the Abzorbaloffs' greed was so great that they often could not help blowing their cover by absorbing too many victims, which was identified as a major weakness. (PROSE: The Monster Vault) Indeed, "Victor Kennedy", after joining LINDA, absorbed Bliss and Bridget Sinclair before absorbing Colin Skinner, after which he was exposed as an Abzorbaloff by Ursula Blake and Elton Pope. (TV: Love & Monsters)