Venganza did not vanish after attacking the Flame Imperator but instead went to where the strongest warriors of the Prima Universe gathered.
His arrival certainly drew people's attention, but other than a short nod, no one focused too much on him. Venganza did not care about pleasantries and saw them all around a gray domain with anxious expressions on their faces.
Inside that domain was Zatiel, in utter agony as flames invaded every part of his body and soul, trying to achieve the greatest level of destruction possible in the shortest amount of time.
Initially, the goal of the power left in the domain by the Flame Imperator was to purge Zatiel's ego. Still, once the Prima Universe's warriors forced him to escape, he sent an order, changing the domain's purpose.