Halaster Blackcloak

{{Character|

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| name=Halaster Blackcloak

| aliases=Hilather, the Mad-Mage of Undermountain, Lord of the Underhalls

| gender= Male

| race=Imaskari Human

| parents=Unknown

| dob=Unknown, between –3920 and –2488 DR

| pob=Unknown, possibly Imaskar

| occupation=Archmage, Arcanist, Custodian of Undermountain

| affiliations=Madryoch (ex), Imaskar, the Empire of Shoon, the Seven of Undermountain, Undermountain, Mystra

| siblings=Unknown

| spouse=None Known

| children=None Known, Apprentices include Arcturia, Jhesiyra Kestellharp, Muiral the Misshapen, Nester, Marambra Nyghtsteel, Rantantar, and Trobriand the Metal Mage

| class=Arch-Wizard

| alignment=Unknown

}}