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nemotron-halloween

AnnouncementProductOct 30, 2026

MonsterHouse, a Halloween installation, runs on a single workstation using the NVIDIA Nemotron Voice Agent, NVIDIA Nemotron 3 ASR, Nemotron 3.5 Bolt E4B 4GB, NVIDIA Magpie TTS Zeroshot, and NVIDIA Audio2Face-3D. The interactive talking garage door listens to trick-or-treaters, replies as a grumpy pirate-ship house, and softens when visitors say "please." A LoRA adapter, trained on over 5,000 multi-turn conversations, supplies the personality, with Nemotron 3 Nano Omni describing costumes.

Why it matters

A NVIDIA employee built MonsterHouse, a Halloween attraction where a garage door talks to trick-or-treaters as a grumpy house assembled from a sunken pirate ship's timbers. The system listens through NVIDIA Nemotron 3 ASR, generates replies with Nemotron 3.5 Bolt E4B 4GB, speaks via NVIDIA Magpie TTS Zeroshot, and animates its wooden mouth using NVIDIA Audio2Face-3D inside Unreal Engine, with NVIDIA Nemotron Voice Agent coordinating the whole pipeline on a single workstation. The character resists visitors at first but softens when they say "please" and offers a warm farewell for "thank you." The creator gave the house a backstory and trained a LoRA adapter on a large set of reviewed multi-turn conversations to keep the personality consistent, testing many models before settling on Bolt E4B because it fit an offline compute budget. The piece matters as a concrete demonstration that open NVIDIA models can drive a fully local, real-time interactive character, and it offers practical lessons on rigging, dataset creation, and choosing models for conversational agents.

Receipt № 26621 source · awaiting confirmation ◐

Evidence

1source· awaiting independent confirmation

No score is assigned. Sources and their independence are shown in the citation chain below.

Citation chain · 1 source

01med
huggingface.coBloghttps://huggingface.co/blog/nvidia/nemotron-halloweenA firsthand NVIDIA builder account explaining how open Nemotron models, a LoRA personality adapter, and Audio2Face-3D animation combine into a fully local talking-garage-door Halloween character.
PRIMARY
NVIDIACompanyNVIDIA Nemotron Voice AgentModelNVIDIA Nemotron 3 ASRModelNemotron 3.5 Bolt E4B 4GBModelNVIDIA Magpie TTS ZeroshotModelNVIDIA Audio2Face-3DModel

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Canonical: https://huggingface.co/blog/nvidia/nemotron-halloween