Giant Family Tree
This family tree only includes the giants and giant-kin that are the children of Annam and/or Othea. I'm working out how other giants fit in with all of this for a future product. Also¸ while this applies to the Forgotten Realms specifically¸ it could be used for any campaign setting. The original titans eventually splintered into seven subtypes¸ but it is unknown how or why this happened. Fog giants are a splinter group of cloud giants and mountain giants a splinter group of hill giants. Canon speculation is that these splinterings were the result of infighting or civil war. Both fog and mountain giants and the titan subtypes are considered "true giants" because they are direct descendants of Annam and Othea.