There are many Purple Lamps. Are you looking for:

Owen Reilly - The Purple Lamp that appears in Time-Mind Sync-Warp.

Xavier Malcolm - The armored Purple Lamp that is a member of the Neo-Bassets.

Frito Lamp - Who is not a Purple Lamp at all, merely a fanboy.

Matt Omley - Who is also just a fanboy, but talks about Purple Lamp all the freaking time.

Purple Lamp Clansmen - Who are also not Purple Lamps, but are dedicated to them.

Baggy Jesus O'Malley the Jew - Who is a Purple Lamp, but is rather unique.

Lamp Prime - The leader of the Purple Lamps.