Klaus said:If you want the "spirit" of R2D2 more than the fact that he'd be a construct (in which case a warforged scout Rogue), I'd say:
Arthur Deitre
dwarf Rogue 8
S 10
D 14
Co 19
I 18
W 12
Ch 14
with Tactile Trapsmith (Int to Open Lock/Diable Device) and Force of Personality (Cha to Will saves). Could head into Dungeon Delver later.
That's a pretty fun way to look at it. The one thing I might change is I'd make him a gnome, rather than a dwarf...I think Artoo's personality is closer to a gnome's.