Ninja Boy

Cards Steam Siege #103

Ninja Boy - Steam Siege (#103)

Trainer Supporter Uncommon
Market price
$0.36
reverseHolofoil · 2 variants
View your lists
Number
103
Illustrator
Megumi Mizutani
i About this card

Ninja Boy - Steam Siege

Ninja Boy is a Uncommon Trainer card from the Steam Siege Pokémon TCG set, released 2016, illustrated by Megumi Mizutani. It sits at card number 103 in the Steam Siege checklist and the Supporter subtype.

In collector terms, this is an uncommon card. Current TCGplayer market price tops out at $0.36 across 2 printed variants (Normal, Holofoil, Reverse Holo, etc.), with every variant's low / mid / high and direct prices listed below.

Catchinary Index Value

CIV 43Average

Weak icon status.

Market Heat 46

30 / 90 / 365-day price momentum.

Icon Status 30

Cultural recognition + iconic-set bonus.

Era Strength 65

Release-window weight.

Score blends market heat, grading upside, icon status, era strength. How CIV works →

Prices USD 2 days ago · 2026-06-09 08:06 UTC

normal
$0.20
Range hidden: thin trading skews TCGplayer's historical low/high. Market price above is the recent-sales weighted average.
reverseHolofoil
$0.36
Range hidden: thin trading skews TCGplayer's historical low/high. Market price above is the recent-sales weighted average.

Where to buy on eBay live marketplace

Live listings load on-demand for cards above $5 market price. For this card, search eBay directly:

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Market price history

Latest
$0.36
Low
$0.13
Jan 2026
High
$2.25
Mar 2022
Avg
$0.88
Days tracked
108
data points
Change
-80.5%
since first tracked
Tracked since Feb 1, 2021 · 108 data points

Sale History 63 sales · since 2021-02-01

Raw high $2.25
Date Grade Price Lot
RAW $0.25
RAW $0.25
RAW $0.15
RAW $0.13
RAW $0.25
RAW $0.99
RAW $2.13
RAW $1.43
RAW $1.46
RAW $1.50
RAW $1.54
RAW $1.35
RAW $1.35
RAW $1.35
RAW $1.35
? Card FAQ

Ninja Boy FAQ

Click any question to expand. Every answer pulls from this card's live Catchinary data.

How much is Ninja Boy from Steam Siege worth?

Recent recorded market price is $0.36 (latest tracked snapshot 2026-06-10) across 2 variants. See the variant breakdown above for per-variant low / mid / high / market spread and the market price history chart for the long-term arc. Graded estimates (PSA 10, PSA 9, CGC Perfect) are shown when auction data is available.

How rare is Ninja Boy?

This printing is an uncommon card (the card is labeled "Uncommon" on the checklist). This is the only printing of Ninja Boy currently indexed.

Who illustrated Ninja Boy?

Megumi Mizutani illustrated this card. See Megumi Mizutani's full Catchinary page for every Pokémon card they've drawn, grouped by set with current market prices, career stats, and alt-art highlights.

When was Ninja Boy released?

The Steam Siege set released in 2016, so this card (#103 in the set) has been available since then. Its current and historical market price is tracked above.

Where can I buy Ninja Boy?

The "Where to buy on eBay" panel above shows live listings. For long-term holds, consider graded copies (PSA / CGC) which trade separately and usually at a premium over raw.

Is this card in Standard format?

Legal formats rotate as new sets release - see the Steam Siege set page for current Standard / Expanded / Unlimited status. Catchinary tracks 0 cards across every English-language set, so if this one has rotated out there's almost certainly a current-format reprint you can check.