diff --git a/core/chains/evm/client/errors.go b/core/chains/evm/client/errors.go
index 7a21a3841c..57cd2b0a3e 100644
--- a/core/chains/evm/client/errors.go
+++ b/core/chains/evm/client/errors.go
@@ -268,6 +268,10 @@ var mantle = ClientErrors{
 	NonceTooLow:     regexp.MustCompile(`(: |^)'*nonce too low`),
 }
 
+var berachain = ClientErrors{	
+	Fatal:           regexp.MustCompile(`(: |^)'*invalid chain ID`),	
+}
+
 var hederaFatal = regexp.MustCompile(`(: |^)(execution reverted)(:|$) | ^Transaction gas limit '(\d+)' exceeds block gas limit '(\d+)' | ^Transaction gas limit provided '(\d+)' is insufficient of intrinsic gas required '(\d+)' | ^Oversized data:|status INVALID_SIGNATURE`)
 var hedera = ClientErrors{
 	NonceTooLow:           regexp.MustCompile(`Nonce too low`),
@@ -289,7 +293,7 @@ var internal = ClientErrors{
 	TerminallyStuck: regexp.MustCompile(TerminallyStuckMsg),
 }
 
-var clients = []ClientErrors{parity, geth, arbitrum, metis, substrate, avalanche, nethermind, harmony, besu, erigon, klaytn, celo, zkSync, zkEvm, treasure, mantle, aStar, hedera, gnosis, internal}
+var clients = []ClientErrors{parity, geth, arbitrum, metis, substrate, avalanche, nethermind, harmony, besu, erigon, klaytn, celo, zkSync, zkEvm, treasure, mantle, berachain, aStar, hedera, gnosis, internal}
 
 // ClientErrorRegexes returns a map of compiled regexes for each error type
 func ClientErrorRegexes(errsRegex config.ClientErrors) *ClientErrors {
diff --git a/core/chains/evm/client/errors_test.go b/core/chains/evm/client/errors_test.go
index e6d2f2d08b..93249a0e22 100644
--- a/core/chains/evm/client/errors_test.go
+++ b/core/chains/evm/client/errors_test.go
@@ -415,6 +415,8 @@ func Test_Eth_Errors_Fatal(t *testing.T) {
 
 		{"failed to forward tx to sequencer, please try again. Error message: 'invalid sender'", true, "Mantle"},
 
+		{"invalid chain ID", true, "Berachain"},
+
 		{"client error fatal", true, "tomlConfig"},
 		{"[Request ID: d9711488-4c1e-4af2-bc1f-7969913d7b60] Error invoking RPC: transaction 0.0.4425573@1718213476.914320044 failed precheck with status INVALID_SIGNATURE", true, "hedera"},
 		{"invalid chain id for signer", true, "Treasure"},
diff --git a/core/chains/evm/config/toml/defaults/BOB_Mainnet.toml b/core/chains/evm/config/toml/defaults/BOB_Mainnet.toml
new file mode 100644
index 0000000000..df84dcd5f1
--- /dev/null
+++ b/core/chains/evm/config/toml/defaults/BOB_Mainnet.toml
@@ -0,0 +1,22 @@
+ChainID = '60808'
+# OP stack https://docs.gobob.xyz/learn/introduction/op-stack
+ChainType = 'optimismBedrock'
+# finality_depth was: ~850
+FinalityDepth = 900
+# block_time was:  2s
+LogPollInterval = '5s'  
+
+NoNewFinalizedHeadsThreshold = '10m'
+
+FinalityTagEnabled = true
+
+[GasEstimator]
+EIP1559DynamicFees = true
+Mode = 'FeeHistory'
+
+[GasEstimator.FeeHistory]
+# block_time was: 2s
+CacheTimeout = '2s'
+
+[GasEstimator.BlockHistory]
+BlockHistorySize = 100
diff --git a/core/chains/evm/config/toml/defaults/BOB_Testnet.toml b/core/chains/evm/config/toml/defaults/BOB_Testnet.toml
new file mode 100644
index 0000000000..2d7782103e
--- /dev/null
+++ b/core/chains/evm/config/toml/defaults/BOB_Testnet.toml
@@ -0,0 +1,22 @@
+ChainID = '808813'
+# OP stack https://docs.gobob.xyz/learn/introduction/op-stack
+ChainType = 'optimismBedrock'
+# finality_depth was: ~850
+FinalityDepth = 900
+# block_time was:  2s
+LogPollInterval = '5s'  
+
+NoNewFinalizedHeadsThreshold = '10m'
+
+FinalityTagEnabled = true
+
+[GasEstimator]
+EIP1559DynamicFees = true
+Mode = 'FeeHistory'
+
+[GasEstimator.FeeHistory]
+# block_time was: 2s
+CacheTimeout = '2s'
+
+[GasEstimator.BlockHistory]
+BlockHistorySize = 100
diff --git a/core/chains/evm/config/toml/defaults/Berachain_Testnet.toml b/core/chains/evm/config/toml/defaults/Berachain_Testnet.toml
new file mode 100644
index 0000000000..d86cf99bb3
--- /dev/null
+++ b/core/chains/evm/config/toml/defaults/Berachain_Testnet.toml
@@ -0,0 +1,18 @@
+ChainID = '80084'
+# finality_depth: instant
+FinalityDepth = 10 
+# block_time: 5s 
+LogPollInterval = '10s' 
+
+FinalityTagEnabled = true
+
+[GasEstimator]
+EIP1559DynamicFees = true
+Mode = 'FeeHistory'
+
+[GasEstimator.FeeHistory]
+# block_time was: 5s
+CacheTimeout = '5s'
+
+[GasEstimator.BlockHistory]
+BlockHistorySize = 100
diff --git a/core/chains/evm/config/toml/defaults/Bsquared_Mainnet.toml b/core/chains/evm/config/toml/defaults/Bsquared_Mainnet.toml
new file mode 100644
index 0000000000..b70a569d27
--- /dev/null
+++ b/core/chains/evm/config/toml/defaults/Bsquared_Mainnet.toml
@@ -0,0 +1,23 @@
+ChainID = '223'
+# OP stack from questionnaire https://docs.google.com/spreadsheets/d/1l8dx1GzxEnjgwH5x3vB60FUr5iFALzPcs6W_wOAiuDs/edit?gid=625078687#gid=625078687
+ChainType = 'optimismBedrock'
+# finality_depth was: ~1900
+FinalityDepth = 2000
+# block_time:  ~2s 
+LogPollInterval = '5s' 
+
+# finality_depth * block_time / 60 secs = ~66  min (finality time)
+NoNewFinalizedHeadsThreshold = '70m' 
+
+FinalityTagEnabled = true 
+
+[GasEstimator]
+EIP1559DynamicFees = true
+Mode = 'FeeHistory'
+
+[GasEstimator.FeeHistory]
+# block_time was: 2s
+CacheTimeout = '2s'
+
+[GasEstimator.BlockHistory]
+BlockHistorySize = 100
\ No newline at end of file
diff --git a/core/chains/evm/config/toml/defaults/Bsquared_Testnet.toml b/core/chains/evm/config/toml/defaults/Bsquared_Testnet.toml
new file mode 100644
index 0000000000..6a00ac9467
--- /dev/null
+++ b/core/chains/evm/config/toml/defaults/Bsquared_Testnet.toml
@@ -0,0 +1,23 @@
+ChainID = '1123'
+# OP stack from questionnaire https://docs.google.com/spreadsheets/d/1l8dx1GzxEnjgwH5x3vB60FUr5iFALzPcs6W_wOAiuDs/edit?gid=625078687#gid=625078687
+ChainType = 'optimismBedrock'
+# finality_depth was: ~1900
+FinalityDepth = 2000
+# block_time:  ~2s 
+LogPollInterval = '5s' 
+
+# finality_depth * block_time / 60 secs = ~66  min (finality time)
+NoNewFinalizedHeadsThreshold = '70m' 
+
+FinalityTagEnabled = true 
+
+[GasEstimator]
+EIP1559DynamicFees = true
+Mode = 'FeeHistory'
+
+[GasEstimator.FeeHistory]
+# block_time was: 2s
+CacheTimeout = '2s'
+
+[GasEstimator.BlockHistory]
+BlockHistorySize = 100
\ No newline at end of file
diff --git a/core/chains/evm/config/toml/defaults/Unichain_Testnet.toml b/core/chains/evm/config/toml/defaults/Unichain_Testnet.toml
new file mode 100644
index 0000000000..9ba82d775b
--- /dev/null
+++ b/core/chains/evm/config/toml/defaults/Unichain_Testnet.toml
@@ -0,0 +1,22 @@
+ChainID = '1301'
+# OP stack: https://docs.unichain.org/docs/getting-started/set-up-a-node#overview
+ChainType = 'optimismBedrock'
+# finality_depth was: ~1900
+FinalityDepth = 2000
+# block_time was:  ~1s 
+LogPollInterval = '5s' 
+
+NoNewFinalizedHeadsThreshold = '5m'
+
+FinalityTagEnabled = true
+
+[GasEstimator]
+EIP1559DynamicFees = true
+Mode = 'FeeHistory'
+
+[GasEstimator.FeeHistory]
+# block_time was: 1s
+CacheTimeout = '1s'
+
+[GasEstimator.BlockHistory]
+BlockHistorySize = 100
\ No newline at end of file
diff --git a/core/chains/evm/config/toml/defaults/Worldchain_Mainnet.toml b/core/chains/evm/config/toml/defaults/Worldchain_Mainnet.toml
new file mode 100644
index 0000000000..e54d17934b
--- /dev/null
+++ b/core/chains/evm/config/toml/defaults/Worldchain_Mainnet.toml
@@ -0,0 +1,22 @@
+ChainID = '480'
+# OP stack: https://worldcoin.notion.site/World-Chain-Developer-Preview-Guide-23c94a67683f4e71986e5303ab88c9f3
+ChainType = 'optimismBedrock'
+# finality_depth was: ~2400
+FinalityDepth = 2500 
+# block_time was:  2s 
+LogPollInterval = '5s' 
+
+NoNewFinalizedHeadsThreshold = '10m'
+
+FinalityTagEnabled = true 
+
+[GasEstimator]
+EIP1559DynamicFees = true
+Mode = 'FeeHistory'
+
+[GasEstimator.FeeHistory]
+# block_time was: 2s
+CacheTimeout = '2s'
+
+[GasEstimator.BlockHistory]
+BlockHistorySize = 100
\ No newline at end of file
diff --git a/core/chains/evm/config/toml/defaults/Worldchain_Testnet.toml b/core/chains/evm/config/toml/defaults/Worldchain_Testnet.toml
new file mode 100644
index 0000000000..36cde53005
--- /dev/null
+++ b/core/chains/evm/config/toml/defaults/Worldchain_Testnet.toml
@@ -0,0 +1,22 @@
+ChainID = '4801'
+# OP stack: https://worldcoin.notion.site/World-Chain-Developer-Preview-Guide-23c94a67683f4e71986e5303ab88c9f3
+ChainType = 'optimismBedrock'
+# finality_depth was: ~2400
+FinalityDepth = 2500 
+# block_time was:  2s 
+LogPollInterval = '5s' 
+
+NoNewFinalizedHeadsThreshold = '10m'
+
+FinalityTagEnabled = true 
+
+[GasEstimator]
+EIP1559DynamicFees = true
+Mode = 'FeeHistory'
+
+[GasEstimator.FeeHistory]
+# block_time was: 2s
+CacheTimeout = '2s'
+
+[GasEstimator.BlockHistory]
+BlockHistorySize = 100
\ No newline at end of file