Joe: moves 1 tile north, 1 tile west (positions himself in the corner of the barrier) and casts Fireball V on himself.
Zeikin: moves as far north as possible.
Radiell: transforms into a Triceratops.
Henry: moves 14 tiles forward, jumps V onto the large bug (so that he can then stand between the large bug and the smaller bug 17), and casts Banish V on the large bug.