Wrathamon
Adventurer
I probably use a Hobgoblin warchief over an orc. Seems like they are more about bossing around goblins, then orcs, or maybe even a Barghest.
Lets break down the factions.
Aboleths: Race of ancient psionic fish-like aberrations. older they are the bigger they are. They view themselves as the first being in existence and hate the upstart races. They live deep in the underdark in ancient underground seas. They do not worship gods (they're that cocky; but some might) but they do have respect/reverence to ancient powerful aberrations (like cthulhu stuff - see warlock) they make thralls (mind-slaves) to do their dirty work on the surface world. In your campaign, it seems like instead of just killing the gods while they are mortal and defenseless. They want to enslave one. They use minions to do their dirty work ... which is the warchief and his tribe.
The god-baby: Who is it? Why this mother? Why this town? Why did the aboleths pick this god?
Warchief: I would go with Hobgoblins seems to work better with goblins (and they are underused in my opinion) and you can use bugbears later on
Hobgoblin is a thrall of the aboleth (or his shaman is and is using the chief to do his masters bidding). The chief sends in his goblin scouts to steal the baby for (needs reason) if he is directly working with the aboleths or the aboleths mind-slaves (cultist) then he does that but if you wanted it to be something more mysterious, then maybe he needs to sacrifice the baby deep in the underdark to gain power but unwittingly he is bringing it to the aboleths. The cultists screw him (which allows a chance for an alliance with the warchief if the players are creative)
Players: Why do they want to save the child? Once they save the child, why do they want to protect it? If it is an evil god child, why not kill it? They need motivation, and that helps if you tie it in with the players back stories. What if the player's are all god-babies? They just don't know it yet.
The players need strong hooks to want to save/protect the baby. After that ... what happens? If they cant protect the child does it become the villain of the campaign?
Lets break down the factions.
Aboleths: Race of ancient psionic fish-like aberrations. older they are the bigger they are. They view themselves as the first being in existence and hate the upstart races. They live deep in the underdark in ancient underground seas. They do not worship gods (they're that cocky; but some might) but they do have respect/reverence to ancient powerful aberrations (like cthulhu stuff - see warlock) they make thralls (mind-slaves) to do their dirty work on the surface world. In your campaign, it seems like instead of just killing the gods while they are mortal and defenseless. They want to enslave one. They use minions to do their dirty work ... which is the warchief and his tribe.
The god-baby: Who is it? Why this mother? Why this town? Why did the aboleths pick this god?
Warchief: I would go with Hobgoblins seems to work better with goblins (and they are underused in my opinion) and you can use bugbears later on

Players: Why do they want to save the child? Once they save the child, why do they want to protect it? If it is an evil god child, why not kill it? They need motivation, and that helps if you tie it in with the players back stories. What if the player's are all god-babies? They just don't know it yet.
The players need strong hooks to want to save/protect the baby. After that ... what happens? If they cant protect the child does it become the villain of the campaign?