COSTUME: dolls clothes
Nicked this custom from Blair (see my links page for his excellent original at the Blair-O-Rama).
Xavier is a Vision head (with Peter Parker ears) on a flesh-coloured T1 body. The clothes he's wearing are (i) Jacket and shirt - Jessica air hostess outfit, (ii) trousers - Jessica hairdresser outfit (iii) socks - gloves from either the 12" Rogue or Storm (can't remember which) and (iv) shoes - a pair of Ken's (which fit perfectly on FC feet). The rug is a couple of tartan ribbons stuck together.
That's the Barbie wheelchair he's in, cut down to roughly FC height and length and repainted.