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Undertale 3D Models: STL Figures, Masks, Keychains

This collection gathers Undertale-themed 3D models prepared as STL files for 3D printing: character figures, masks, keychains and small heart icons. It is useful when you want a recognizable game item that fits a home printer rather than a large display piece. The mix ranges from simple flat shapes to multi-part figures, so the amount of work depends on what you pick. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

このコレクションの本文は英語で書かれています。検索自体はどの言語でも使えます。

Polyzonのコレクション · モデル47件 4サイトから収集

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このコレクションは、Polyzonが対応サイトの検索結果をもとに作成しています。重複やプレビューのないモデルは除外し、関連性の低いものは後ろに回し、それ以外は検索結果の順に並べています。モデルの権利は各作者にあります。利用条件は各モデルのページでご確認ください。

選定基準：Polyzon編集部 · 本文の更新日：2026年10月13日

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«Undertale 3D Models: STL Figures, Masks, Keychains»

The most common group is character models — full figures, busts and stylized heads based on the game's cast. Alongside them sit masks, which are usually hollow shells printed in several pieces, and small accessories such as keychains, pendants and buttons that use little material. A third group covers flat or near-flat items: heart and soul icons, wall plaques and message-style props, plus a few Deltarune and crossover pieces such as keycaps.

When choosing, open the author's model page and read what is actually stated there: overall size and scale, how many parts the model is split into, whether the orientation requires supports, and which material and layer height the author used. For masks and figures, check wall thickness and whether the model is meant to be glued or slotted together. For keychains and pendants, look at the loop or hole diameter so a ring or cord passes through after printing.

To widen or narrow the results, try synonyms and related terms: character names, "mask", "keychain", "pendant", "bust", "figurine", "heart", "soul", "icon", "pixel", "sprite", "charm", "keycap". Related searches include Deltarune, indie RPG characters, retro game pixel art, and low-poly game props. If you want fewer parts, filter toward flat or single-piece items; if you want a display piece, search for multi-part figures instead.

FAQ

よくある質問

What kinds of Undertale models are usually available for 3D printing?
Character figures and busts, masks, keychains and pendants, heart or soul icons, buttons and a few crossover items. Flat props and small charms appear most often because they need little material.
Do Undertale masks need supports when printed?
It depends on the model. Many masks are split into sections and printed in a chosen orientation, so read the author's notes on orientation and supports before slicing.
What should I check before printing a character figure?
Look at the stated height and scale, the number of separate parts, how they join, and the material and layer height the author lists. Photos of finished prints help you judge the surface detail.
How can I find more models on this topic?
Search by character names plus words like figure, mask, keychain, pendant or icon, and add related terms such as Deltarune, pixel art or indie RPG. Combining a character name with an item type usually narrows the list fastest.
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