  We construct the full set of boundary giant magnons on $\mathbb{R}\times
S^{2}$ attached to the maximal $Z=0$ giant graviton by mapping from the general
solution to static sine-Gordon theory on the interval and compute the values of
$\Delta-J$ at finite $J$, including the leading order corrections when $J$ is
large. We then consider the Born-Infeld theory of the giant graviton itself to
construct BIon spike solutions that correspond to the world volume description
of the boundary giant magnons at finite $J$.
