I know you generally see Knuckles and Shadow gijinka art...I've thrown a few random Vector, Mighty and Rouge out there too. Though Vector is always a challenge for me, as I gave him super-short hair...I do enjoy drawing Vector more than most other Sonic (gijinka) characters. It may be because of the way I portrayed him in my fan-fiction. chuckle It may also be because...his only real animal feature is his tail--well, that and his pointy teeth, but I never show him with an open-mouthed smile. :)
In my fan-fiction...Vector plays around and jokes about, like he does in the games, but he also has a really serious side and you can never underestimate him. In the human-form all Anthros got after the Chaos Wave hit...Vector also got a lot of tattoos. If you can't figure them out...it is a symbolic representation of sun and rain. :)
Vector belongs to Sega, this gijinka/human-form design is my own.
Link
Timot-Eii
The tattoo detailing really brings out this piece. It's always worth trying to draw both eyes though its very tricky!