His team has employed some tactics to ____________him as a figure of power.

The word "portray" means to depict or represent someone in a certain way, which fits the context of using tactics to create an image of someone as a figure of power. Expose means to reveal something, often negatively, which does not fit the intention of portraying someone positively. Disguise means to alter appearance to prevent recognition, which is contrary to the idea of portraying. Overlook means to fail to notice or ignore, which does not fit the context of actively representing someone. Portray is the most appropriate word to complete the sentence.