In Game.ini below header [/script/shootergame.shootergamemode]

NPCReplacements=(FromClassName="Allo_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Ammonite_Character_BP_AADAberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Archa_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Beaver_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Deinonychus_Character_BP_AADAberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Deathworm_Character_BP_AADAberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Dilo_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Dimorph_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Direwolf_Character_BP_AADAberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Euryp_Character_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Galli_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Jerboa_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Jugbug_Character_BP_AADAberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Kaprosuchus_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Kentro_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Mantis_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Megalania_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Megatherium_Character_BP_AADAberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Moth_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Moth_Character_BP_Aberrant_BD_C",ToClassName="")
NPCReplacements=(FromClassName="NightWyvern_Character_BP_C",ToClassName="")
NPCReplacements=(FromClassName="Oviraptor_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Pachyrhino_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Phiomia_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Procoptodon_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Ptero_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Quetz_Character_BP_AADAberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Rex_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="RockGolem_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Saber_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="SpiderS_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Stag_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Tapejara_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Terrorbird_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Therizino_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Thylacoleo_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Troodon_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Unicorn_Character_BP_AADAberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Yutyrannus_Character_BP_Aberrant_C",ToClassName="")

! Two "possible" future fliers. (not yet implemented)

NPCReplacements=(FromClassName="Argent_Character_BP_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Griffin_Character_BP_Aberrant_C",ToClassName="")

! If you run both KBD and AAD you need to "replace" the KBD versions that overrides the AAD versions instead. (Or disable them in GUS.ini see Krakens Better Dinos for instructions on how)

NPCReplacements=(FromClassName="BDAmmonite_Character_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="BDEuryp_Character_Aberrant_C",ToClassName="")
NPCReplacements=(FromClassName="Oviraptor_Character_BP_Aberrant_BD_C",ToClassName="")
NPCReplacements=(FromClassName="Pachyrhino_Character_BP_Aberrant_BD_C",ToClassName="")
NPCReplacements=(FromClassName="Stag_Character_BP_Aberrant_BD_C",ToClassName="")

! And finally the Tek Rex that is added as a small chance to spawn in place of the Aberrant Rex.

NPCReplacements=(FromClassName="BionicRex_Character_BP_C",ToClassName="")


Hopefully this includes all current dinos. So just copy and past into you config and remove the rows for the dinos you want to keep in the game.

thx mate

thanks for this! was about to ask myself

Wanted to disable the aberrant rex so i still had a reason to tame a reaper.

Unless you running a no Tek Variant or staying only on Aberration, otherwise disabling the Tek Rex would disable them on all maps which would mean you wont see them anywhere and its going to be Herbivore Paradise on Gen1's Lunar Biome with the exception of Tek Raptors, Reapers, and the Drones.