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Set 70173 Ultra Agents Ocean HQ
Agents Ultra Agents

LEGO® Ultra Agents Ocean HQ

The Ocean HQ 70173 belongs to the short-lived LEGO® Ultra Agents line and depicts an undersea base for a secret agency battling the criminal Ultra-Villains organisation in 2015. With 1,204 pieces, 283 unique elements and 6 minifigures, it is one of the larger sets in the theme. This page lists every part, colour and fact about the set.

Set number
70173
Year
2015
Pieces
1,204
Minifigures
6
Theme
Ultra Agents
Different parts
283
What can I build with it?

View the official building instructions at LEGO® ↗

Parts list 283

As BrickLink list (XML)

Import on BrickLink: Wanted → Upload, upload the file (or paste its content), pick a Wanted List and add the parts.

Spare parts (24)

These extra parts come with the set in case one gets lost.

Minifigures 6

Description

A spy base built for secrecy

Ultra Agents was a short-lived LEGO® theme centred on a secret agency fighting a group of criminal masterminds known as the Ultra-Villains. The Ocean HQ represents a disguised undersea base from which the agents plan and launch their missions. Round windows, submarine docking points and hidden doors give the design a spy-thriller feel closer to a television agency headquarters than a typical LEGO house. That pop-culture nod also makes the set interesting to fans of classic spy fiction beyond the Ultra Agents universe itself.

Playable features for covert missions

The base opens up at several points, letting play take place inside while attackers try to break in from outside at the same time. Across 283 unique parts, there is enough variety to fill out control rooms, docking bays and hidden escape routes. The parts list on this page shows exactly which elements went into each functional area of the base, useful if you are completing a secondhand set. That setup allows defence and infiltration play to alternate within the same model.

A grey and white high-tech palette

Black, light and dark bluish grey form the base colours, with white picked out on technical elements and window frames for contrast. That restrained palette reinforces the high-tech feel of the base and stands apart from more colourful LEGO themes of the same period. If you are hunting for a specific shade of grey or buying the set secondhand, the full parts list gives a reliable count of every colour used. On a shelf, the base reads as tidy and technical rather than playfully bright.

Six minifigures, two sides

The 6 included minifigures likely split into agents and opponents, supporting scenes with clear sides, such as defending the base against an attack. Each figure brings its own accessories, from tools to equipment pieces, all of which can be traced individually through the parts list on this page. For collectors of Ultra Agents sets, this is one of the few large base sets from a theme that ran for a relatively short time. Because the theme only ran briefly, complete sets like this one are sought after by collectors.

FAQ

What is the LEGO Ultra Agents theme?
Ultra Agents was a short-lived LEGO® theme from 2014/2015 about a secret agency fighting a group of villains known as the Ultra-Villains.
How many pieces and minifigures come with the Ocean HQ?
The set has 1,204 pieces across 283 unique elements and includes 6 minifigures.
What functions does the base have?
The Ocean HQ opens at several points and includes control rooms, docking bays and hidden areas for play.

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