The Robotech Defenders are a line of scale model kits released by Revell during the early 1980s with an accompanying limited comic series published by DC Comics. Contrary to what their name seems to imply, the "'Robotech Defenders'" are not part of the Robotech anime universe adapted by Carl Macek and released by Harmony Gold USA, but they did adopt the same moniker and logo.

The "Robotech Defenders" were one of two "Robotech" lines released by Revell, the other being the "Robotech Changers". The "Robotech Changers" line initially consisted of three models based on the Valkyrie Variable fighter designs from Macross, and the NEBO model, based upon the Orguss of Super Dimension Century Orguss.

The "Robotech Defenders" model line was tied into a two-issue limited series of the same name, published by DC comics. It shares many common themes with other science fiction series of that time, including invading aliens, and giant mechanical war machines.

Seeking to capitalize on the Mecha craze of the early 1980s, Model Company Revell went to Japan to look for suitable mecha models prior to 1984. They eventually licensed a number of Takara's Fang of the Sun Dougram models for the "Defenders" line. These models were repackaged with the "Robotech" moniker, and released in North America and Europe.

The humanoid Mech models had an average size of 30 cm, the in-scale humans were about 2 cm. One of the features of the models (excepting the Human and Grelon miniatures) was that they were not static, but had fully movable joints and removable equipment. Because of the complexity, details and parts they can be challenging and require adult skill level even though they were sold with "ages 12 and up" on their packaging. Experienced modelers found them challenging, especially the Humans and Grelons.

In the North American market, the models met with some success, appealing to both fans of Robotech and the players of Battletech tabletop strategy game. In Europe, however, model sales were disappointing, possibly due to the non-existent background story included with the models, and the relatively high prices.

Release of the "'Robotech Defenders'" and "'Robotech Changers'" model lines caused problems for media company Harmony Gold USA, who licensed the North American video rights to the Japanese Macross anime series, combining it with two other series to produce an 85 episode series they hoped to market direct to video. Since Revell was already distributing the models, Harmony Gold could not support the show with merchandising. In the end, both companies decided to enter into a co-licensing agreement and the name Robotech was eventually adopted for the syndicated television show that the home video line had transformed into.

Players of FASA's BattleTech tabletop strategy game universe will instantly recognize many of the Revell models as Mechs from the original Role Playing Game sourcebooks. The reason for this is that all of the original edition's 'Mech visuals were based on designs from a variety of anime series, including Macross, Dougram and Crusher Joe, some of which Revell kits are sourced. FASA eventually became embroiled in a lawsuit with Harmony Gold regarding the use of Macross images,^[1] and after which FASA removed all Macross related images along with any other images not created in house from their Sourcebooks. Those 'Mechs would later be known by BattleTech fans as 'The Unseen'.

The eponymous comic book, a two-issue mini-series, was published by DC Comics in 1984. It was originally intended to be a trilogy, but was reduced to the first normal-sized issue and a 32-page second issue with no advertisement. The universe of the "'Robotech Defenders'" comic book series bears no resemblance at all to the Robotech universe adapted by Harmony Gold USA. The Robotech Defenders comic predates the conception of the original Robotech cartoon show by about a year.

The story followed the battles of a team of pilots who fight a savage race of aliens, called "Grelons", who have invaded all planets of a star system using superior technology. They plan to colonize the planets, using their titanic war machines to eliminate all resistance. The heroes, a small combat unit, are losing badly when their leader accidentally activates one of the Robotech Defenders. She then learns of the existence of the other machines, which are scattered on the other pilots' home planets. Each of these units has a unique range of abilities and environmental specialties (e.g., Aqualo was capable of diving and sea-based activities, Ziyon's Element was cold and snow, Thoren's heat and magma, Gartan's urban combat).

By the end of the first issue, the team have managed to recover all the robots and engage the enemy in battle, but are still defeated and get captured. They escape by pushing a big red button which releases the Defenders' minds, unleashing the latter's' full combat capabilities. The pilots then track down the controllers of the savage aliens. They defeat them by causing the evil alien energy siphon to suck the energy from the sun, causing their space ship to explode.