President William Ruto appears to have singled out Nairobi Senator Edwin Sifuna for frequent public criticism and direct responses, labeling him with various derogatory terms.

• The article highlights President Ruto's repeated attacks on Senator Sifuna, calling him names like "Mr Shiny Things," "Mr Empty," and "Mr 40."
• The key individuals involved are President William Ruto and Nairobi Senator Edwin Sifuna.
• Senator Sifuna is also described as an extortionist and a puppet of former President Uhuru Kenyatta in these exchanges.