What is the role of Pickering in Pygmalion?

In George Bernard Shaw's play "Pygmalion," Henry Higgins and Colonel Pickering are both phonetics experts. Pickering serves as a foil to Higgins, providing a more gentle and polite demeanor in contrast to Higgins's brusque and abrasive nature. He also helps facilitate Eliza's transformation, acting as a supportive and nurturing figure throughout the story.