I support Tal'dir Eater of Chalk.
For color, i'd like light silver, with a copper stripe all the way from the nose to the tail, and on the forearm/legs. Eyes look like an ever-moving fluid multicolored pattern (like there was a bunch of coloured fluids in your eyeballs), with a vertical pure black vertical pupil.
Appearance: long and graceful. your spine have flexible soft spikes, connected by a translucid membrane. You also have it on the sides of your tail and your arms and legs.
Course of action: headbutt the wall.
EDIT: i forgot: we're scaleless, but our soft, hydrodynamic skin is as resistant as spiderweb (it's 5 times stronger than steel), wich enable us to move freely, yet it is able to instantly harden when hit, becoming even stronger (but rigid) for a short time: it can become as hard as diamond.