The title the Deceiver is earned by using a demonic title scroll. The scroll is a drop from Yor'Ger the Deceiver inside The Shadow Reef.
This title changes according to the language of the server on which RuneScape is played, as shown below:
||die Heuchler / die Heuchlerin
||le Mystificateur / la Mystificatrice
||o Enganador / a Enganadora
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