Mario's birth and body — "that Mario’s life there is by…"
that Mario’s life there is by all appearances kind of a sad and left-out-type existence, the only physically challenged minor in residence, unable even to grip a regulation stick or stand unaided behind a boundaried space.
Context
Mario's status at E.T.A., a body-meritocracy where personhood is measured in grip and unaided stance: his disability defined entirely in the institution's terms, with the "by all appearances" hedge as setup for the whole rest of the scene proving the appearance wrong.