Yes, Gandalf does return in The Two Towers. After his fall in The Fellowship of the Ring, he is resurrected as Gandalf the White, a more powerful incarnation of his character. In The Two Towers, we see him reappear to aid Aragorn, Legolas, and Gimli in their quest to rescue Merry and Pippin.
His return signifies not just a physical revival but also a symbolic rejuvenation of hope for the Free Peoples of Middle-earth. Gandalf’s transformation allows him to confront greater threats, including Saruman, who has turned to the dark side. This new role enhances his wisdom and strength, allowing him to play a crucial part in the battle against Sauron.
Gandalf’s return adds depth to the narrative, showcasing themes of sacrifice, growth, and the struggle between good and evil. His presence reinforces the idea that, even in dire circumstances, there is always a chance for renewal and assistance from unexpected places.