There’s a free Bento, Bakes on Mesh-compatible head available on the SL Marketplace, called Viktor, from a store called Ca’lum (here’s the listing).
Surprisingly, the Viktor head does not come with a head/body shape or an eyebrow shape included! It also doesn’t come with any skin. However, the package does include a HUD to control such features as the colour of the included mesh eyes, the size of the eye pupils, eyelashes, skin pores, skin shininess, etc.:
There’s also a second HUD with static eye and mouth poses. The Viktor package also includes a folder with various kinds of Bakes on Mesh facial hair (which I did not use, as the Bakes on Mesh skin from Sweet’s I used for these pictures already had some beard stubble).
I have found the head responds well to the sliders, and I made a few adjustments to the shape of his head, and the size of his nose and his ears. Here’s what the Viktor head looks like after those adjustments, paired with the dollarbie Meshbody Classic male mesh body (which supports Bakes on Mesh):
Total cost of this entire avatar is only L$1 (the cost of the Classic mesh body); everything else was free: the Viktor head, the boxer shorts (a freebie from Fitch), and the animation override (a freebie from Tuty’s Animations). And, of course, you can use any system/Bakes on Mesh tattoos, hairbases, clothing, etc. with this body.
Happy freebie shopping! I have added the Viktor head to my constantly-updated listing of free and inexpensive mesh heads and bodies for male avatars.