Bald penciled the first appearance of the Sub-Mariner spin-off character Namora, in "The Coming of Namora" in "Marvel Mystery Comics" #82 (May 1947), but it is unclear if he helped create the character; the cover, which was sometimes created first, featured Namora drawn by Bob Powell. Similarly, Bald drew Timely's single issue of "The Witness" (Sept. 1948), starring a character co-created by writer-editor Stan Lee, but the cover for which was drawn by Charles Nicholas. Bald, with an unidentified writer, co-created the Timely superhero Sun Girl, who starred in a three-issue series cover-dated August to December 1948.