 Complete the following phrase:  Banjo and Kazooie also appear as a single playable fighter via downloadable content in the 2018 crossover fighting game, Super Smash Bros. Ultimate. Phil Spencer, head of the Xbox brand, stated that negotiating the characters inclusion was an easy deal to make due to their strong third-party relationship with Nintendo. The characters were released on 4 September 2019, along with a stage based on Spiral Mountain and Banjo-Kazooie musical arrangements, including one by original composer Grant Kirkhope. Diddy Kong Racing artist, Paul Cunningham was responsible for Banjo and Kazooies design in Smash Bros. Ultimate. Rare studio head Craig Duncan explained that how it worked with Nintendos Smash Bros. DLC by saying that he met with Nintendo at 