LEGO Star Wars: The Video Game/Characters

There are several different types of playable characters in Lego Star Wars - Jedis/Siths, who use a lightsaber and the Force; characters with blasters, who use blasters and can grapple in certain areas; (marked with red circles) and droids, who won't be attacked by enemies. Astromech and protocol droids can open certain doors.

Jedi
The Jedi Knights wield lightsabers and use the Force. Also, unlike most characters, they can double-jump.

Anakin Skywalker
For Anakin Skywalker as a Sith, see Darth Vader. For Anakin Skywalker as a child, see Anakin Skywalker (Boy).

Mace Windu
Mace Windu wields a purple lightsaber.

Episode III
Mace Windu (Episode III) is essentially the same as the normal Mace Windu, except he wears a darker shirt.

Yoda
Being a Jedi, Yoda can use the Force and a lightsaber. However, he walks very slowly, but has a fast hoverchair. To use it, don't equip your lightsaber, and jump. Or you can use a lightsaber, he'll jump around instead of walking. The slightest tap of the control stick while your lightsaber is equipped will make Yoda jump. However, you still have full control of your movement, (except vertically) as you can control your jumps.

Sith
Like the Jedi, Siths use the Force and a lightsaber.

Darth Maul
Being a Sith, Maul wields a red lightsaber and the Force. However, unlike most Jedi and Sith, his lightsaber is double-ended.

Droids
Droids are machine characters. If you use certain droids, you won't be attacked by certain enemies. Others - protocol droids and astromech droids, can open certain doors. Astromech droids can hover for short periods of time.

Battle Droid
The standard Battle Droid has no special color - it's just one color. It has a blaster, and can't jump. It looks somewhat like a skeleton, as it has little to no armor.

Commander
Battle Droid Commanders have yellow shoulders and foreheads.

Security
The Security Battle Droid has red shoulders and chests.

Super Battle Droid
Super Battle Droids are upgraded versions of the original Battle Droid - they have more powerful armor, taking three hits to destroy. They look very little like the original Battle Droids - their armor removes the "skeletal" look, and they're gray.

C-3PO
C-3PO is a protocol droid.

Droideka
The Droideka is a shielded droid that can shoot two lasers at a time, in volleys of four. It normally moves very slowly. It can roll, but must disable its shield in order to do so.

Gonk Droid
The Gonk Droid doesn't have any weapon, can't access special places, and can't jump. The only thing it can do is walk around without being attacked. This can be useful for exploring, however it's hard to travel without jumping, and it's very slow.

It looks like a single Lego block, but with feet. When disabled by astromech droids, it falls over, then after a few seconds somehow gets up.

PK Droid
Like the Gonk Droid, the PK Droid can't do anything, only walk around without being attacked. The only gameplay difference between it and the Gonk Droid is that it's faster.

R2-D2
R2-D2 is an astromech droid.

R4-P17
R4-P17 is an astromech droid.

TC-14
TC-14 is a protocol droid.

Other
This category includes other characters that don't fit in any of the above categories. These include blaster characters, who can shoot or use a grappling hook in certain spots.

Anakin Skywalker (Boy)
Anakin as a child. He can crawl into certain trapdoors with X. He has no weapon.

Queen Amidala
Queen Amidala is unlocked in Chapter I-3. She has a blaster.

Jar Jar Binks
Jar Jar Binks, introduced in Chapter I-2, can jump very high. As a result, he can reach places most other characters can't reach. However, he has no attack. More information at: Wookieepedia.

Captain Panaka
Captain Panaka is unlocked in Chapter I-3. He wields a blaster. More information at: Wookieepedia.