For 10 points, name this singer of "California Gurls" and "Roar."
In a music video, this artist "catches" a banana by crafting a makeshift spear from half a shoe. This artist is credited with popularizing a minor third alternation dubbed the "Millennial Whoop." This artist invoked Muhammad Ali before declaring "I went from zero to my own hero." One of this artist's songs begins with (*) Snoop Dogg's invocation "Greetings, loved ones: let's take a journey." Another of this artist's songs somewhat questionably rhymes "fighter" with "dancing through the fire." This singer was backed by the ineffable dancing of "Left Shark" at the Super Bowl 49 Halftime Show. For 10 points, name this singer of "California Gurls" and "Roar."
In a music video, this artist "catches" a banana by crafting a makeshift spear from half a shoe.
Katy Perry [or Katheryn Elizabeth Hudson] &lt;JR&gt;