Emblem noun – A device, design, or figure used as an identifying mark. Streamer and emblem are semantically related. In some cases you can use "Streamer" instead a noun "Emblem". Nearby Word: emblematic
Streamer noun – A piece of cloth with a special design that is used as an emblem or for signaling. Emblem and streamer are semantically related. Sometimes you can use "Emblem" instead a noun "Streamer". Nearby Words: stream, streamed, streaming, streamy
After Pokemon X, the streamer found the color-coded usernames cumbersome as more colors are being added, and as a result, the players have a numbered and colored emblem next to their username representing the run they've made their first input.