diff --git a/packages/apps-config/src/api/spec/dolphin.ts b/packages/apps-config/src/api/spec/dolphin.ts
new file mode 100644
index 0000000000..9aa6c3cdcb
--- /dev/null
+++ b/packages/apps-config/src/api/spec/dolphin.ts
@@ -0,0 +1,30 @@
+// Copyright 2017-2021 @polkadot/apps-config authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { OverrideBundleDefinition } from '@polkadot/types/types';
+
+// structs need to be in order
+/* eslint-disable sort-keys */
+
+const definitions: OverrideBundleDefinition = {
+  types: [
+    {
+      // on all versions
+      minmax: [0, undefined],
+      types:
+      {
+        CurrencyId: {
+          _enum: [
+            'DOL'
+          ]
+        },
+        CurrencyIdOf: 'CurrencyId',
+        Amount: 'i128',
+        AmountOf: 'Amount',
+        AccountInfo: 'AccountInfoWithDualRefCount'
+      }
+    }
+  ]
+};
+
+export default definitions;
diff --git a/packages/apps-config/src/endpoints/testing.ts b/packages/apps-config/src/endpoints/testing.ts
index a8deb0c1b4..415f70ac92 100644
--- a/packages/apps-config/src/endpoints/testing.ts
+++ b/packages/apps-config/src/endpoints/testing.ts
@@ -120,6 +120,13 @@ export function createTesting (t: TFunction, firstOnly: boolean, withSort: boole
         'Dock Association': 'wss://knox-1.dock.io'
       }
     },
+    {
+      info: 'dolphin',
+      text: t('rpc.dolphin', 'Dolphin Testnet', { ns: 'apps-config' }),
+      providers: {
+        'Dolphin Testnet': 'wss://trillian.dolphin.red'
+      }
+    },
     {
       info: 'dotmog',
       text: t('rpc.test.dotmog', 'DOTMog', { ns: 'apps-config' }),
diff --git a/packages/apps-config/src/ui/colors.ts b/packages/apps-config/src/ui/colors.ts
index 464d9b48a7..328ba09dbc 100644
--- a/packages/apps-config/src/ui/colors.ts
+++ b/packages/apps-config/src/ui/colors.ts
@@ -32,6 +32,7 @@ const chainCrustMaxwell = '#2E333B';
 const chainClover = 'linear-gradient(to right, #52ad75, #7cc773)';
 const chainChainx = '#F6C94A';
 const chainDarwinia = 'linear-gradient(-45deg, #FE3876 0%, #7C30DD 71%, #3A30DD 100%)';
+const chainDolphin = '#000000';
 const chainDotMog = '#020609';
 const chainEfinity = '#496ddb';
 const chainEquilibrium = '#1792ff';
@@ -228,6 +229,7 @@ export const chainColors: Record<string, string> = Object.entries({
   'Darwinia Crab Redirect': chainCrab,
   'Darwinia PC2': chainRoccoDarwinia,
   DataHighway: chainRoccoDataHighway,
+  'Dolphin Testnet': chainDolphin,
   'DOTMog.com NET': chainDotMog,
   Efinity: chainEfinity,
   Equilibrium: chainEquilibrium,
diff --git a/packages/apps-config/src/ui/logos/index.ts b/packages/apps-config/src/ui/logos/index.ts
index b7d93e9e2c..2eec43c31c 100644
--- a/packages/apps-config/src/ui/logos/index.ts
+++ b/packages/apps-config/src/ui/logos/index.ts
@@ -74,6 +74,7 @@ import nodeDarwinia from './nodes/darwinia.png';
 import nodeDataHighway from './nodes/datahighway.png';
 import nodeDockMainnet from './nodes/dock-mainnet.png';
 import nodeDockTestnet from './nodes/dock-testnet.png';
+import nodeDolphin from './nodes/dolphin.svg';
 import nodeDotMog from './nodes/dotmog.svg';
 import nodeEave from './nodes/eave.svg';
 import nodeEdgeware from './nodes/edgeware-white.png';
@@ -192,6 +193,7 @@ export const chainLogos = Object.entries({
   'Darwinia Crab PC2': nodeCrab,
   'Darwinia PC2': nodeDarwinia,
   DataHighway: nodeDataHighway,
+  'Dolphin Testnet': nodeDolphin,
   Dusty: chainDusty,
   Efinity: chainEfinity,
   Equilibrium: chainEquilibrium,
@@ -520,6 +522,7 @@ export const namedLogos: Record<string, unknown> = {
   datahighway: nodeDataHighway,
   'dock-pos-mainnet': nodeDockMainnet,
   'dock-pos-testnet': nodeDockTestnet,
+  dolphin: nodeDolphin,
   dotmog: nodeDotMog,
   dusty: chainDusty,
   eave: nodeEave,
diff --git a/packages/apps-config/src/ui/logos/nodes/dolphin.svg b/packages/apps-config/src/ui/logos/nodes/dolphin.svg
new file mode 100644
index 0000000000..049501036f
--- /dev/null
+++ b/packages/apps-config/src/ui/logos/nodes/dolphin.svg
@@ -0,0 +1,12 @@
+<svg version="1.2" baseProfile="tiny-ps" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 243 243" width="243" height="243">
+	<title>dolphin_logo</title>
+	<style>
+		tspan { white-space:pre }
+		.shp0 { fill: #c4a5bd }
+		.shp1 { fill: #ffffff }
+	</style>
+	<g id="2">
+		<path id="Shape 4" class="shp0" d="M128.85 192.96C128.85 192.96 187.87 181.38 160.49 139.53C143.48 113.54 109.11 115.91 75.59 125.2C47.03 133.12 40.96 129.89 40.96 129.89C40.96 129.89 18.17 126.06 49.75 103.62C49.75 103.62 34.11 30.48 133.24 46.68C244.56 64.86 229.51 210.83 131.48 204.35C131.48 204.35 124.3 202.79 128.85 192.96ZM147.3 42.3C147.3 42.3 170.87 46.83 190.37 65.95C190.37 65.95 191.82 42.73 203.55 34.41C203.55 34.41 216.45 22.4 198.28 23.03C181.12 23.62 159.44 26.68 147.3 42.3ZM102.62 142.12C102.62 142.12 120.88 143.35 128.25 160.17C135.61 176.99 138.68 191.32 141.57 194.67C144.47 198.03 110.3 194.55 106.09 185.67C101.88 176.8 116.83 169.77 100.16 145.41C100.16 145.41 98.39 141.22 102.62 142.12ZM84.34 228.42C84.34 228.42 101.54 234.69 115.14 222.27C128.74 209.86 137.39 197.98 141.4 196.08C145.42 194.19 112.75 183.52 105.28 189.95C97.81 196.37 108.61 208.86 83.43 224.41C83.43 224.41 80.11 227.53 84.34 228.42ZM111.21 122.6C111.21 122.6 116.84 146.74 135.3 152.85C135.3 152.85 132.49 128.6 135.11 126.73C136.46 125.77 129.82 122.92 123.31 122.11C117.19 121.35 111.21 122.6 111.21 122.6Z" />
+		<path id="Ellipse 1" class="shp1" d="M81.39 81.72C86.25 81.72 90.19 85.64 90.19 90.47C90.19 95.3 86.25 99.22 81.39 99.22C76.53 99.22 72.59 95.3 72.59 90.47C72.59 85.64 76.53 81.72 81.39 81.72Z" />
+	</g>
+</svg>