The Kildarian Pantheon
During the Crimson Dusk, with his final sacrifice Hadar began to consume the Gods. When the Red Star perished, it is believed that not all gods returned as normal. In the aftermath of these events, the new Kildarian Pantheon was established. The human Monarchy had failed, and with the reformation of Kildar as a Guildocracy, the disparate peoples of Kildar needed to be united more than ever.
In an effort to unite the various species of Kildar, they created the Kildarian Pantheon, an attempt to religiously unite all. Each god was a leader of their pantheon respectively. The lesser gods that they lead are now viewed as aspects of the greater deity itself. Therefore, each divine domain is represented in one way or another through the greater god itself. For example, the dwarf god Moradin is the leader of his pantheon, thus one of his aspects can be death, but another can be knowledge.
Gruumsh was perhaps the most controversial addition to the Kildarian Pantheon, but a necessary one if the Orcs of Kildar would ever accept a truce between them and the Guilds. Now full citizens, they are allowed to openly worship Gruumsh, though this sometimes lead to religious tensions with the followers of Corellon.