Free Block Avatars Chat Overlay With Custom Hex Colors

A new chatter sends their first message and a colorful block character appears at the bottom of the screen, holding the spot until they go quiet. Block Avatars give every viewer a chunky, modern presence in your scene that they can color themselves with a hex code and animate with simple commands. It is built for streamers who want the energy of a chatter-character overlay without the retro pixel-art aesthetic that already saturates the category.

It is free with Meld Studio. No watermark, no paywall, no usage cap.

How chatters control their blocks

Three commands cover the core interaction. !jump makes the block hop. !dance triggers a dance animation. !color followed by a hex code, like !color #ff66cc, sets the block to a specific color and keeps it there across future streams. Regulars end up with a recognizable color signature in your scene, and new chatters can experiment until they find a shade they want to claim.

Blocks persist for 20 minutes after a chatter’s last message, which is longer than most avatar overlays hold. That keeps the row full during talk shows, long subathons, and multi-hour playthroughs where chat ebbs and flows. When someone goes quiet for the full 20 minutes, their block fades out and the canvas opens up for the next wave of viewers.

The overlay listens to chat from every platform you stream to. Twitch, YouTube Live, Kick, and TikTok Live messages all spawn blocks on the same row, so a multistream looks like one community on screen rather than four fragmented chats sharing space.

Why streamers use it

The chunky, color-customizable shape solves a specific problem: streamers who like the chatter-character format but want a clean, modern visual identity rather than retro pixel art or sketchy hand-drawn lines. Blocks read clearly at typical chat-overlay sizes and stay legible against busy gameplay or facecam-heavy layouts.

The hex color command is the part that turns regulars into recognizable presences. A viewer who picks the same color every stream becomes visually identifiable across sessions, and new viewers see a row of distinct, intentional characters rather than randomly assigned visuals.

Customizing with Meld Spark

Meld Spark, the AI overlay editor included with Meld Studio, lets you reshape the overlay without touching code. The gallery tip ships with a ready prompt: “Add a !wave animation and make blocks slightly larger.” Run it and the new command works immediately. You can also lock animations to subscribers, swap blocks for other geometric shapes, or tie animations to channel events. Each change persists between sessions.

Adding it to your stream

Download Meld Studio and the overlay drops into a scene with the chat connections already wired up. If you already run OBS, the free Spark Plug for OBS plugin loads Block Avatars as a browser source inside your existing OBS layout, with the same Twitch, YouTube Live, Kick, and TikTok Live commands and the same Meld Spark control over animations and shapes.

Use cases

• Variety streams that want a clean, modern avatar layer

  For variety creators who do not want the retro feel of pixel art or the hand-drawn look of stick figures, blocks land in the middle: clean, colorful, and modern. The chunky shapes read clearly at typical chat sizes, and viewers can claim a hex color that becomes their identity on screen across future streams.

• Long sessions where avatars need to stay calm

  Block avatars stay on screen for 20 minutes after a chatter's last message, which is longer than most avatar overlays hold. That makes them well suited to long talk shows, multi-hour playthroughs, and subathons where chat ebbs and flows but the bottom row should stay populated rather than emptying out every few minutes.

Chat commands

Frequently asked questions