Hasbro 28748
Hasbro Transformers: Dark of the Moon Ultimate Optimus Prime
Model: 28748
Introduction
The Hasbro Transformers: Dark of the Moon Ultimate Optimus Prime figure is a detailed action figure designed for fans aged five years and older. This figure features multiple transformation modes, electronic lights, and sounds, providing an immersive play experience. Standing over 22 inches tall in its combined Power-Up Mode, it offers a significant presence for display or play.
This manual provides instructions for setting up, operating, and maintaining your Ultimate Optimus Prime figure, including details on its various modes and electronic features.
Safety Information
- Recommended Age: This product is suitable for ages 5 years and up. Small parts may be present, posing a choking hazard for younger children.
- Battery Safety: Use only the specified battery type (2 AA batteries). Do not mix old and new batteries, or different types of batteries. Insert batteries with correct polarity. Remove exhausted batteries promptly. Do not recharge non-rechargeable batteries.
- Supervision: Adult supervision is recommended, especially during initial transformation, as some steps can be complex.
Package Contents
Verify that all the following items are included in your package:
- Ultimate Optimus Prime Figure
- Trailer (transforms into Omega Combat Armor)
- MechTech Weapons System Ultimax Super Cannon
- 2 x AA Batteries (pre-installed or included separately)
- Instruction Manual (this document)
Setup
Battery Installation
The Ultimate Optimus Prime figure requires 2 AA batteries for its electronic lights and sounds. These batteries are typically included. If replacement is needed:
- Locate the battery compartment, usually on the back or underside of the main figure.
- Using a Phillips/cross head screwdriver (not included), open the battery compartment cover.
- Insert 2 new AA batteries, ensuring correct polarity (+/-).
- Replace the battery compartment cover and secure it with the screw.
Note: The product is designed for immediate use out of the box, with no initial assembly required beyond potential battery installation.
Operating Modes and Transformation
The Ultimate Optimus Prime figure features three distinct modes: Robot Mode, Trailer Mode, and Power-Up Mode. Transformation between these modes involves multiple steps and requires careful attention to the included detailed instructions (often a separate large sheet).
1. Trailer Mode
In Trailer Mode, Optimus Prime appears as a semi-trailer truck with a distinct red and blue finish and racing stripes. The truck is designed to roll freely on various surfaces.

Image: Ultimate Optimus Prime in its semi-trailer truck form, featuring a red and blue cab with flames and a grey trailer.
2. Robot Mode
From Trailer Mode, Optimus Prime can transform into his massive Robot Mode. This mode features detailed articulation, allowing for various poses. The figure is equipped with a retractable battle mask.

Image: Ultimate Optimus Prime in its robot form, standing upright with red and blue armor, and grey mechanical details.
3. Power-Up Mode (with Omega Combat Armor)
For enhanced combat capabilities, the trailer converts into the Omega Combat Armor. Optimus Prime can be placed inside this armor, achieving an impressive 22-inch height with extended wings. In this mode, the figure utilizes the firing Ultimate Super Cannon.

Image: Ultimate Optimus Prime in its Power-Up Mode, featuring large extended wings and the Omega Combat Armor, with the Ultimax Super Cannon detached nearby.
Transformation Process
The transformation between modes is intricate. It is recommended to follow the detailed, step-by-step instructions provided in the separate instruction sheet that came with your product. The process can take a significant amount of time, especially during initial attempts. Patience and careful handling are advised to prevent damage to the figure's joints and components.
The figure includes six Mechtech ports on the wings and four on the cannon, allowing for attachment of additional Mechtech weapons (sold separately) to customize your figure's combat readiness.
Electronic Features
The Ultimate Optimus Prime figure is equipped with electronic lights and sounds to enhance play:
- Weapon Lights: The Ultimax Super Cannon features glowing weapon lights.
- Battle Sounds: Separate buttons on the Ultimax Super Cannon activate rocket and plasma firing sounds, accompanied by flashing red lights.
- Voice Phrases: Pulling the sliding trigger on the cannon opens its front for a coordinated burst of lights and sounds, including the iconic phrase "I am Optimus Prime!"
- Launching Missile Sounds: The figure also produces launching missile sounds.
Ensure fresh batteries are installed for optimal performance of these electronic features.
Maintenance
- Cleaning: To clean the figure, gently wipe it with a dry, soft cloth. Avoid using harsh chemicals or abrasive cleaners, as these can damage the paint or plastic.
- Storage: Store the figure in a cool, dry place away from direct sunlight to prevent material degradation and color fading.
- Battery Replacement: Replace batteries when electronic features become dim or cease to function. Refer to the "Battery Installation" section for instructions.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Electronic features (lights/sounds) not working. | Dead or incorrectly installed batteries. | Check battery polarity and replace with fresh AA batteries. |
| Difficulty transforming the figure. | Incorrect sequence or stiff joints. | Refer to the detailed instruction sheet. Apply gentle, consistent pressure. Avoid forcing parts. Some joints may be stiff initially. |
| Wings detach frequently. | Normal design for reattachment. | The wings are designed to detach and reattach easily. Simply snap them back into place. |
| Figure balance issues, especially with cannon attached. | Weight distribution of the Ultimax Super Cannon. | Adjust the figure's stance and the cannon's position to find a stable balance point. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Hasbro |
| Model Name | Ultimate Optimus Prime |
| Model Number | 28748 |
| Character | Transformers |
| Recommended Age | 5 years and up |
| Dimensions (L x W x H) | Approximately 15.98" x 5.98" x 14.49" (figure only) |
| Height (Power-Up Mode) | Over 22 inches |
| Item Weight | Approximately 5 Pounds |
| Material | Plastic |
| Color | Red and Blue |
| Power Source | Battery powered |
| Batteries Required | 2 x AA (included) |
| Features | Electronic lights and sounds, converting trailer (Omega Combat Armor), extending wings, Ultimate Super Cannon, retractable battle mask, Mechtech ports. |
Warranty and Support
For information regarding product warranty, replacement parts, or customer support, please refer to the official Hasbro website or contact their customer service department directly. Contact details are typically found on the product packaging or Hasbro's official website.
Note: This instruction manual does not constitute a warranty. Any legal disclaimers regarding product condition (e.g., "natural shelf wear") are separate from operational instructions.
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