Doppelganger Gog

Notes:
 * He spawns in 3 different locations: J-6, I-7, or G-7. This is in the Lilac Tower which is at H-3 in East Sarutabaruta.
 * He spawns approximately every 8 minutes.
 * When it's time for him to spawn, either him, Doppelganger Dio, Bomb King, or a measly Balloon will pop. So it's random.
 * Killable solo at level 33.