Is that the so-called “Pentawatt” package?
If you have local libraries, look in {KiCAD_Installation_Directory}\share\kicad\modules\Power_Packages_ThroughHole.pretty
Or maybe it’s at {KiCAD_Installation_Directory}\share\kicad\modules\TO_SOT_Packages_THT.pretty
Also look at https://github.com/WillBickerstaff/Pentawatts.pretty
And there are similar packages, some with provision for attached heatsinks, at http://smisioto.no-ip.org/elettronica/kicad/kicad-en.htm
(Scroll down to find the “TO and similars” section of the web page, about 3/4 of the way down the page. The footprint library file is at http://smisioto.no-ip.org/kicad_libs/modules/mod_to.zip )
With any of these footprints, be sure to verify the dimensions - especially the spacing between the staggered rows of pins. If there is a discrepancy, it’s an easy edit to move the positions of 2 or 3 pads then save the footprint under a new name. Unless you want to live dangerously, and risk having the assemblers cursing your name because they have to re-form all those leads to fit the footprint you chose.
The *.pdf documents created by @felixq, and linked from the Forum threads at Full Footprint Library Lists ? (Ideally in ascii?) and Full Footprint Library Lists ? (Ideally in ascii?) provide a handy reference. They may be out of date by now, but at least you have a starting point for where to look for footprints.
Dale