This script will kick everybody you can kick off a channel.

It works by doing a /names, saving the data, removing useless parts of information, and then turns it into a list of users to kick.

Syntax: /masskick

Alternatively, you can right click on the nick list, goto "Control", and then click on "Mass Kick".

menu nicklist {
  Control
  .Mass Kick { masskick $chan }
}
alias masskick {
  if ($1 != $null) { set -u5 %channel $1 | names $1 }
}
raw 353:*:{
  if ($3 == %channel) {
    set %masskick $remove($1-,^,~,&,@,%,+,$me = $3)
    set %loop $numtok(%masskick,32)
    while (%loop > 0) {
      if ($gettok(%masskick,%loop,32) != $me) { kick %channel $gettok(%masskick,%loop,32) Masskick! }
      dec %loop
    }
    unset %masskick %channel %loop
  }
}