Here is the 3.75 inch classic Sonic figure, which comes with a badnik robot - MotoBug - as accessory from the classic Genesis games. Look how put-out it looks...its rather funny. This was released together with the classic Tails figure (See Here)

The accessories feel really solid, not cheap or flimsey. MotoBug's tire feels like 'toy car wheel' material, and has treads. Grabber Spiders' legs are sculpted to be quite mechanical looking. Grabber won't grab, and you can't roll Motobug. Which is a bit too bad.

Both of these are decent figures. Since they're classic and small, neither has knees or elbows. Tails tails can turn, which helps him to stand up. Both figures' heads are solid/heavy, so Sonic may have trouble standing. Neither comes with a base or hole-in-foot. Oddly, they are NOT scaled, so Tails is taller than Sonic. It looks odd if you set them next to each other. Most of the Tails' waist joints will be easy to turn, most of the Sonics' will be frozen/stuck when you buy. If you attempt to turn him, the legs can break off instead. Also notice: That's NOT Sonic 1 Motobug. Why did they choose it to represent Sonic 1? That's the one more like from Sonic Colors.
Over All: Good figures so far. If you love the classics, pick these guys up! They should be about $6.99 at Target and Toys R Us, 9.99 at GameStop. There's no re-buying of anything here, so the TRU prices are just fine. The screen-cap box backgrounds make them nice for MIB display, and its wonderful to finally have badnicks to play with!
Why not "great"?
Sonic will barely stand * Tails isn't scaled, he's huge * Badniks don't DO anything, not even 1 simple action * Motobug is the wrong one * Sonics' frequently frozen waist joint that encourages kids to break him trying to move it
They're little things, but it's that pile of little stuff that turns "good" into "great & memorable"

Each classic 3.75 inch figure box has the same back. It has the Generations CG art for classic Sonic, the classic logo, & the same bio for him as everything else. The cards also have screen capture scenes (complete with pixels!) from the game that the badnik & included character are supposed to be from.
Sonic's box has Sonic 1 Green Hill, though the Motobug doesn't match that game. 

Here's 3.75 size regular Sonic (box seen above) He does not have knee or elbow joints, but he does have a waist-swivel. His head is solid plastic, so he's a tad easy to tip over, but can still have a couple poses. Both hands are just fists. His face & expression are good, & as usual, the sculpt is nice too.

Photo by JeffNov 

Some of him may have a paint flaw on the waist swivel, so do inspect him. It is also important to note that if one of his joints are 'frozen' (like an ankle, the waist, a wrist) that you not twist it really hard to get it going. He'll likely break before it unfreezes. He's a great buy anyway, as you get Motobug with him, and nothing's a re-buy. Additional Motobug shot to show it has a vent in the back.