Sister Monkey (mk031) Quick Facts
| BrickLink ID | mk031 |
| Theme | Ninjago Dragons Rising |
| Year Released | 2021 |
| Average Price (Used) | $3.67 |
| Average Price (New) | $6.34 |
| Price Range | $1.85 – $5.39 |
| Parts | 5 |
| Found In | 1 set |
About Sister Monkey
The LEGO Sister Monkey (mk031) is a Ninjago Dragons Rising minifigure worth $3.67 on average, released in 2021 and found in 1 set. It has 5 individual parts. The Ninjago Dragons Rising theme average is $7.25, making this figure below average for its theme.
Sister Monkey (mk031) is a common Ninjago Dragons Rising minifigure, averaging $3.67 on BrickLink. At this price point it's usually not worth listing individually — bundle it with other Ninjago Dragons Rising figures or include it in a themed minifig lot to move it. The value is in volume, not the single sale.
Seller notes
- New/sealed copies sell for $6.34 vs $3.67 used — a 73% premium. If you have this figure still sealed or in excellent condition with all accessories, price it closer to the new average.
- At this price point, list on BrickLink with other Ninjago Dragons Rising figures to save on shipping and attract buyers building out their collection. Individual listings at low prices rarely justify the packaging time.
Parts in Sister Monkey (5)
Sets containing Sister Monkey (1)
Common questions about Sister Monkey
How much is LEGO mk031 (Sister Monkey) worth in 2026?
The LEGO Sister Monkey (mk031) is worth $3.67 used and $6.34 new/sealed on average, based on BrickLink sales data from the last 6 months. Prices range from $1.85 to $5.39 depending on condition. Completeness (all accessories included) and print condition are the biggest factors affecting price.
What sets include the Sister Monkey minifigure?
Sister Monkey appears in 1 set: The Legendary Flower Fruit Mountain (80024-1, ~$182.86). Since it was only in one set, it can't be sourced elsewhere — that scarcity is reflected in the price.
How do I identify Sister Monkey?
Look for the BrickLink ID mk031 — it's the definitive identifier for this figure. Sister Monkey is made up of 5 parts (a standard minifigure assembly). The parts breakdown on this page shows each component with colors. If you have a loose figure and aren't sure what it is, the brick'em scanner can identify it from a photo in a few seconds.
What's the best way to sell Sister Monkey?
At this price point, the most efficient approach is to bundle it with other Ninjago Dragons Rising minifigures in a lot rather than listing individually. On BrickLink, you can list it as part of a themed minifig bundle. On eBay or Mercari, a "LEGO Ninjago Dragons Rising Minifigure Lot" listing with 5-10 figures will move faster and earn more than individual sales.