It looks like the Lee told Kirby to "bring back Goom" or in this case "the son on Goom". Then at the end Lee asked the readers if they wanted Googam to come back yet again (spoiler: they didn't). I don't know why Lee liked the character, but Goom was not a great character for continued stories, and Kirby evidently knew it. This is the kind of story you write when you don't want to write a story. On to the next one.