diff --git a/pkg/modules/avatar/avatar.go b/pkg/modules/avatar/avatar.go
index aefb9d50f..321fb8553 100644
--- a/pkg/modules/avatar/avatar.go
+++ b/pkg/modules/avatar/avatar.go
@@ -18,6 +18,7 @@ package avatar
 
 import (
 	"code.vikunja.io/api/pkg/log"
+	"code.vikunja.io/api/pkg/modules/avatar/botmarble"
 	"code.vikunja.io/api/pkg/modules/avatar/empty"
 	"code.vikunja.io/api/pkg/modules/avatar/gravatar"
 	"code.vikunja.io/api/pkg/modules/avatar/initials"
@@ -47,6 +48,7 @@ func FlushAllCaches(u *user.User) {
 		&ldap.Provider{},
 		&openid.Provider{},
 		&marble.Provider{},
+		&botmarble.Provider{},
 		&empty.Provider{},
 	}
 	for _, p := range providers {
diff --git a/pkg/modules/avatar/botmarble/botmarble.go b/pkg/modules/avatar/botmarble/botmarble.go
new file mode 100644
index 000000000..03e025ded
--- /dev/null
+++ b/pkg/modules/avatar/botmarble/botmarble.go
@@ -0,0 +1,44 @@
+// Vikunja is a to-do list application to facilitate your life.
+// Copyright 2018-present Vikunja and contributors. All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package botmarble
+
+import (
+	"code.vikunja.io/api/pkg/modules/avatar/marble"
+	"code.vikunja.io/api/pkg/user"
+)
+
+// botColors is a cool-toned palette distinct from the marble default so bot avatars are visually recognizable as bots at a glance.
+var botColors = []string{
+	"#3B82F6",
+	"#06B6D4",
+	"#8B5CF6",
+	"#14B8A6",
+	"#6366F1",
+}
+
+// Provider renders marble-style avatars using the bot-specific palette.
+type Provider struct{}
+
+func (p *Provider) GetAvatar(u *user.User, size int64) ([]byte, string, error) {
+	return marble.GenerateSVG(u, size, botColors)
+}
+
+func (p *Provider) AsDataURI(u *user.User, size int64) (string, error) {
+	return marble.GenerateDataURI(u, size, botColors)
+}
+
+func (p *Provider) FlushCache(_ *user.User) error { return nil }
diff --git a/pkg/modules/avatar/marble/marble.go b/pkg/modules/avatar/marble/marble.go
index 2fcad6be6..9f7493253 100644
--- a/pkg/modules/avatar/marble/marble.go
+++ b/pkg/modules/avatar/marble/marble.go
@@ -34,7 +34,7 @@ func (p *Provider) FlushCache(_ *user.User) error { return nil }
 
 const avatarSize = 80
 
-var colors = []string{
+var defaultColors = []string{
 	"#A3A948",
 	"#EDB92E",
 	"#F85931",
@@ -62,12 +62,12 @@ func getUnit(number int, rang, index int) int {
 	return value
 }
 
-func getPropsForUser(u *user.User) []*props {
+func getPropsForUser(u *user.User, palette []string) []*props {
 	ps := []*props{}
-	for i := 0; i < 3; i++ {
+	for i := range 3 {
 		f := float64(getUnit(int(u.ID)*(i+1), avatarSize/10, 0))
 		ps = append(ps, &props{
-			Color:      colors[(int(u.ID)+i)%(len(colors)-1)],
+			Color:      palette[(int(u.ID)+i)%len(palette)],
 			TranslateX: getUnit(int(u.ID)*(i+1), avatarSize/10, 1),
 			TranslateY: getUnit(int(u.ID)*(i+1), avatarSize/10, 2),
 			Scale:      1.2 + f/10,
@@ -78,13 +78,14 @@ func getPropsForUser(u *user.User) []*props {
 	return ps
 }
 
-func (p *Provider) GetAvatar(u *user.User, size int64) (avatar []byte, mimeType string, err error) {
+// GenerateSVG renders a marble-style SVG avatar for the given user using the provided palette.
+func GenerateSVG(u *user.User, size int64, palette []string) (avatar []byte, mimeType string, err error) {
 
 	s := strconv.FormatInt(size, 10)
 	avatarSizeStr := strconv.Itoa(avatarSize)
 	avatarSizeHalf := strconv.Itoa(avatarSize / 2)
 
-	ps := getPropsForUser(u)
+	ps := getPropsForUser(u, palette)
 
 	return []byte(`<svg
       viewBox="0 0 ` + avatarSizeStr + ` ` + avatarSizeStr + `"
@@ -126,16 +127,24 @@ func (p *Provider) GetAvatar(u *user.User, size int64) (avatar []byte, mimeType
     </svg>`), "image/svg+xml", nil
 }
 
-// AsDataURI returns a data URI for the SVG avatar
-func (p *Provider) AsDataURI(u *user.User, size int64) (string, error) {
-	avatarData, mimeType, err := p.GetAvatar(u, size)
+// GenerateDataURI returns a base64-encoded data URI for a marble-style SVG avatar using the provided palette.
+func GenerateDataURI(u *user.User, size int64, palette []string) (string, error) {
+	avatarData, mimeType, err := GenerateSVG(u, size, palette)
 	if err != nil {
 		return "", err
 	}
 
-	// Encode the SVG as base64 and create a data URI
 	base64Data := base64.StdEncoding.EncodeToString(avatarData)
 	dataURI := fmt.Sprintf("data:%s;base64,%s", mimeType, base64Data)
 
 	return dataURI, nil
 }
+
+func (p *Provider) GetAvatar(u *user.User, size int64) (avatar []byte, mimeType string, err error) {
+	return GenerateSVG(u, size, defaultColors)
+}
+
+// AsDataURI returns a data URI for the SVG avatar
+func (p *Provider) AsDataURI(u *user.User, size int64) (string, error) {
+	return GenerateDataURI(u, size, defaultColors)
+}
diff --git a/pkg/routes/api/v1/avatar.go b/pkg/routes/api/v1/avatar.go
index 5bddb31f5..d98b9dc32 100644
--- a/pkg/routes/api/v1/avatar.go
+++ b/pkg/routes/api/v1/avatar.go
@@ -22,6 +22,7 @@ import (
 	"code.vikunja.io/api/pkg/log"
 	"code.vikunja.io/api/pkg/models"
 	"code.vikunja.io/api/pkg/modules/avatar"
+	"code.vikunja.io/api/pkg/modules/avatar/botmarble"
 	"code.vikunja.io/api/pkg/modules/avatar/empty"
 	"code.vikunja.io/api/pkg/modules/avatar/upload"
 	"code.vikunja.io/api/pkg/user"
@@ -68,6 +69,10 @@ func GetAvatar(c *echo.Context) error {
 		avatarProvider = &empty.Provider{}
 	}
 
+	if found && u.IsBot() {
+		avatarProvider = &botmarble.Provider{}
+	}
+
 	size := c.QueryParam("size")
 	var sizeInt int64 = 250 // Default size of 250
 	if size != "" {