Final answer:
The theme 'ego can cloud a person's judgment' in 'Romeo and Juliet' Act 2, Scenes 4-6 is developed through actions of Mercutio, Romeo, and Friar Laurence, whose decisions influenced by ego lead to tragic consequences.
Step-by-step explanation:
The question seems to have inaccuracies as it refers to King Richard and not characters from Shakespeare's Romeo and Juliet. Therefore, an answer specific to Act 2, Scenes 4-6 of Romeo and Juliet will be addressed. The theme "ego can cloud a person's judgment" is developed when Mercutio ridicules Romeo, not aware how deeply Romeo is in love with Juliet. Additionally, the theme is seen when Romeo hastily arranges his and Juliet's marriage, disregarding the feud between their families which could signal the potential consequences of his actions. Lastly, Friar Laurence agrees to marry them, hoping to end the feud between the Capulets and the Montagues, yet underestimating the complexities of such a deep-seated conflict. These actions all stem from the characters’ egos and lead to a clouded judgment that significantly contributes to the tragic outcome of the play.