diff --git a/fuzzers/mopt2/builder.Dockerfile b/fuzzers/mopt2/builder.Dockerfile
new file mode 100644
index 000000000..fe213d12b
--- /dev/null
+++ b/fuzzers/mopt2/builder.Dockerfile
@@ -0,0 +1,31 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+ARG parent_image
+FROM $parent_image
+
+# Set AFL_NO_X86 to skip flaky tests.
+RUN git clone https://github.com/vanhauser-THC/MOpt /afl && \
+    cd /afl && \
+    git checkout 63ce2d71134d80327b28ee2a80cae4ecbe374f54 && \
+    cd MOpt && AFL_NO_X86=1 make && \
+    cp afl-fuzz ..
+
+# Use afl_driver.cpp from LLVM as our fuzzing library.
+RUN apt-get update && \
+    apt-get install wget -y && cd /afl/MOpt && \
+    wget https://raw.githubusercontent.com/llvm/llvm-project/5feb80e748924606531ba28c97fe65145c65372e/compiler-rt/lib/fuzzer/afl/afl_driver.cpp -O /afl/MOpt/afl_driver.cpp && \
+    clang -Wno-pointer-sign -c -o /afl/MOpt/afl-llvm-rt.o /afl/MOpt/llvm_mode/afl-llvm-rt.o.c -I/afl/MOpt && \
+    clang++ -stdlib=libc++ -std=c++11 -O2 -c -o /afl/MOpt/afl_driver.o /afl/MOpt/afl_driver.cpp && \
+    ar r /libAFL.a *.o
diff --git a/fuzzers/mopt2/fuzzer.py b/fuzzers/mopt2/fuzzer.py
new file mode 100755
index 000000000..150d1992a
--- /dev/null
+++ b/fuzzers/mopt2/fuzzer.py
@@ -0,0 +1,37 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Integration code for MOpt fuzzer."""
+
+from fuzzers.afl import fuzzer as afl_fuzzer
+
+
+def build():
+    """Build benchmark."""
+    afl_fuzzer.build()
+
+
+def fuzz(input_corpus, output_corpus, target_binary):
+    """Run fuzzer."""
+    afl_fuzzer.prepare_fuzz_environment(input_corpus)
+
+    afl_fuzzer.run_afl_fuzz(
+        input_corpus,
+        output_corpus,
+        target_binary,
+        additional_flags=[
+            # Enable Mopt mutator with pacemaker fuzzing mode at first. This
+            # is also recommended in a short-time scale evaluation.
+            '-L',
+            '0',
+        ])
diff --git a/fuzzers/mopt2/runner.Dockerfile b/fuzzers/mopt2/runner.Dockerfile
new file mode 100644
index 000000000..0d6cf004e
--- /dev/null
+++ b/fuzzers/mopt2/runner.Dockerfile
@@ -0,0 +1,15 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FROM gcr.io/fuzzbench/base-image