Tang Shen was raised by the Ancient One, along with Hamato Yoshi and Yukio Mashimi. Yoshi and Shen fell in love, but this attracted the jealousy of Mashimi. To make matters worse, while both Yoshi and Mashimi were Guardians of the Utroms, Yoshi was promoted up to the rank of Guardian Prime while Mashimi was passed over. Mashimi's jealousy of Yoshi eventually led him to betray everything and join the Foot Clan. He killed Shen and led an attack against the Utroms. The attack failed, and the Utroms fled to a new hiding place, but Yoshi stayed behind and sought revenge. He attacked the Foot headquarters alone, fighting his way up to Mashimi, until finally he dueled Mashimi and killed him. Later, he moved to New York, the new hiding place of the Utroms. On her gravestone, her name was written as "唐慎" (Táng Shèn). While she did not appear again in the series, her grave was later visited by Splinter, who brought Yoshi's ashes back to Japan to be buried next to her.
- According to the 2003 series, Táng Shèn's name is written "唐慎".