Command to Spawn Tamed: Cheat GMSummon "RebirthRex_Character_BP_C" 150
Add to Spawners (Game.ini): ConfigAddNPCSpawnEntriesContainer=(NPCSpawnEntriesContainerClassString="DinoSpawnEntriesBeach_C",NPCSpawnEntries=((AnEntryName="RebirthRex",EntryWeight=0.1,NPCsToSpawn=("/ArkRebirthRexMod/Dinos/RebirthRex/RebirthRex_Character_BP.RebirthRex_Character_BP_C"))),NPCSpawnLimits=((NPCClass="/ArkRebirthRexMod/Dinos/RebirthRex/RebirthRex_Character_BP.RebirthRex_Character_BP_C",MaxPercentageOfDesiredNumToAllow=0.1)))