I'm just gonna copy and paste what I wrote on the Rivendell announcement article, where I did my own comparisons based on the pictures:

Tolkien 1980, "The History of Galadriel and Celeborn", "Appendix B: The Sindarin Princes of the Silvan Elves" Lee, Stuart D.; Solopova, Elizabeth (2005). The Keys of Middle-earth: Discovering Medieval Literature Through the Fiction of J. R. R. Tolkien. Palgrave. pp.133, 140–141. ISBN 978-1403946713. If Tolkien’s projected rewriting of our story in 1960 had proceeded as far as the Mirkwood chapters, we might have been able to discover whether he intended to bring Legolas into Mr. Baggins’ story (after all, in the light of later knowledge we can say he would almost certainly have been present at the Battle of Five Armies); there is no sign of it in the admittedly sketchy notes that survive. But even this would hardly have resolved the question of what was in Tolkien’s mind almost thirty years earlier when he wrote The Hobbit, since by that later date he was committed to the decision that Thingol and the Elvenking were two different characters. Gandalf is very similar, I prefer the old cape and head, but the torso and legs/dress will depend on the circumstance. The new Aragorn and Sam have different outfits, so their use depends on the situation. I prefer the ranger Aragorn, although the council outfit is useful in Rivendell. Sam’s new outfit is useful for while in the shire, while his old outfit is good for his outfit further into the journey. I think the old Aragorn and Boromir heads capture the actors better, although the new Boromir might be useful if I want to switch his hair to the more accurate reddish brown. I’m unsure on which outfit is better, there are certain aspects of each design I prefer better, so I’ll wait to see it in person. I like the new Boromir shield, although the older feels more ‘Lego’ to me. Facial expressions have also become less comical on the whole, while features like cheekbones are de-emphasised. The retention of some features is notable too, as the Hobbits' hairstyles are unchanged and Gandalf remains familiar too, despite the modern robe.Andy • Brand • Chunk • Data • Elgin Perkins • Francis Fratelli • Jake Fratelli • Mama Fratelli • Mikey • Mouth • Mr. Walsh • Mrs. Walsh • Octopus • One-Eyed Willy • Rosalita • Sheriff • Sloth • Stef • Troy Perkins

Bonnie • Devon Miles • Garthe Knight • K.A.R.R. • K.I.T.T. • Michael Knight • Reginald 'RC3' Cornellius III • Slammin' Sammy John D. Rateliff speculates in The History of The Hobbit: Mr Baggins and Return to Bag-End that had Tolkien gone on to finish the 1960 edit of the The Hobbit, proceeding to add to the Mirkwood scenes, it is possible Legolas would have been introduced. At Edoras, Legolas and the others are forced to disarm before seeing the King, although Gandalf manages to get his staff through. The possessed Théoden is under the control of Gríma Wormtongue, servant of Saruman and the fallen wizard possesses the king's mind. Théoden and Wormtongue set their thugs on the group and Legolas, Gimli and Aragorn fight them off while Gandalf walks towards the king, using his staff he frees him from the spell, revealing himself to Saruman as the new white wizard. Against the wishes of Gandalf and Aragorn, Théoden believes it would be best to take refuge in the stronghold of Helm's Deep. This variant appears in 79001 Escape from Mirkwood Spiders. The only piece the two versions have in common is the part that makes up Legolas's hair and ears. His face is double sided. On one side, he has a neutral, almost somber expression, with the eyes slightly larger than normal and the mouth turned down slightly. His alternate expression sports bared teeth and slanted eyebrows in a snarl. Two creases, one larger than the other, are located in between the brown eyebrows. One of his main recognizable features, the high cheekbones, are also present. Anubis Guard • Charlie the Funland Robot • Dada-Doo • Daphne • Fred • Mummy • Mumsy-Doo • Scooby-Doo • Shaggy • VelmaWyldstyle • Emmet • Bad Cop • Benny • Unikitty • Robo SWAT • Micro Manager • MetalBeard • Gail the Construction Worker • Frank the Foreman • Mrs. Scratchen-Post • Lord Business • Giant Snail • Skeleton • Cowboy/Cowgirl • Nice Vampire The dual-moulded legs for the Hobbits was an obvious update and probably the most significant of the positive changes. Similarly, the use of appropriately printed skirt pieces for Gandalf and Elrond also makes much sense and works well, particularly since the more limited functionality is overcome by the very cleverly created seated versions of both characters.

Legolas was the son of Thranduil, King of the Woodland Realm of Northern Mirkwood, [T 1] who appeared as "the Elvenking" in The Hobbit. [T 2] Thranduil, one of the Sindar or "Grey Elves", [T 3] ruled over the Silvan Elves or "Wood-elves" of Mirkwood. [T 1]In The Lord of the Rings: The Fellowship of the Ringvideo game, Legolas is voiced by Michael Reisz but he's not a playable character. In its sequels The Lord of the Rings: The Two Towers (video game) and The Lord of the Rings: The Return of the King (video game), he is voiced by Orlando Bloom also in this game he is a playable character that can be used in the campaign missions.

In LEGO The Lord of the Rings: The Video Game, Legolas' appearance is based on that of his physical The Lord of the Rings minifigure. In the game, his default weapon is at first an "Elven Bow", but after visiting Lothlorien, he is given a new longbow, "Galadhrim", which replaces his old one. Both of these bows have the same function- they can be used to shoot enemies and other objects, including targets which are only able to be hit by arrows. In close-quarters combat, Legolas automatically switches to twin daggers, which are based upon the daggers that Tauriel comes with in 79001 Escape from Mirkwood Spiders. However, these daggers can be selected to be out by default instead of the bow. Azog \ Berserker Uruk-hai \ Goblin King \ Goblin Scribe \ Goblin Soldier \ Gundabad Orc \ Hunter Orc \ Lurtz \ Mordor Orc \ Moria Orc \ Narzug \ Uruk-hai \ Yazneg The History of Middle-earth, Vol. II: The Book of Lost Tales Part Two, chapter VI: " The History of Eriol or Ælfwine and the End of the Tales" The differences between the minifigures are interesting, I prefer some aspects of the 2012 figs, and some of the improvements in the new fellowship. In the midst of the fighting, Aragorn is dragged off a cliff and into the river below. Legolas and Gimli interrogate the dying Sharku, where the Elf recovers the Evenstar. Legolas believes that Aragorn has perished and is disconsolate, but Théoden urges them to come to Helm's Deep. Legolas and Gimli have no choice to but to continue.

Gandalf the Grey

Legolas (pronounced [ˈlɛɡɔlas]) is a fictional character in J. R. R. Tolkien's The Lord of the Rings. He is a Sindar Elf of the Woodland Realm and one of the nine members of the Fellowship who set out to destroy the One Ring. He and the Dwarf Gimli are close friends. Newt Scamander • Tina Goldstein • Queenie Goldstein • Jacob Kowalski • Credence Barebone • Chastity Barebone • Gnarlak • Seraphina Picquery • Percival Graves • Abernathy • Bernadette • Madam Ya Zhou • Langdon Shaw • Gilbert Bingley • Mary Lou Barebone • Senator Shaw • Modesty Barebone • Niffler • MACUSA Auror • Frank Shippey, Tom (2005) [1982]. The Road to Middle-Earth (Thirded.). HarperCollins. p.141. ISBN 978-0261102750. The three met with the Riders of Rohan, fought in the Battle of Helm's Deep, and witnessed Saruman's downfall at Isengard, where they were reunited with Merry and Pippin. [T 12]